Document:

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                                                                     EXHIBIT 4.2

                             SYNAPTICS INCORPORATED

              0.75% CONVERTIBLE SENIOR SUBORDINATED NOTES DUE 2024

                          REGISTRATION RIGHTS AGREEMENT

                                                                December 7, 2004

Bear, Stearns & Co. Inc.
Credit Suisse First Boston LLC
c/o Bear, Stearns & Co. Inc.
383 Madison Avenue
New York, NY 10179

Ladies and Gentlemen:

      Synaptics Incorporated, a Delaware corporation (the "Company"), proposes
to issue and sell to the initial purchasers named in the purchase agreement (the
"Initial Purchasers"), upon the terms set forth in such purchase agreement dated
December 1, 2004 (the "Purchase Agreement"), its 0.75% Convertible Senior
Subordinated Notes due 2024 (the "Securities"). As an inducement to the Initial
Purchasers to enter into the Purchase Agreement and in satisfaction of a
condition to the obligations of the Initial Purchasers thereunder, the Company
agrees with the Initial Purchasers for the benefit of Holders (as defined
herein) from time to time of the Registrable Securities (as defined herein) as
follows:

      1.    Definitions.

      (a)   Capitalized terms used herein without definition shall have the
meanings ascribed to them in the Purchase Agreement. As used in this Agreement,
the following defined terms shall have the following meanings:

      "Additional Interest" has the meaning assigned thereto in Section 7(a)
hereof.

      "Affiliate" of any specified person means any other person which, directly
or indirectly, is in control of, is controlled by, or is under common control
with such specified person. For purposes of this definition, control of a person
means the power, direct or indirect, to direct or cause the direction of the
management and policies of such person whether by contract or otherwise; and the
terms "controlling" and "controlled" have meanings correlative to the foregoing.

      "Business Day" means each Monday, Tuesday, Wednesday, Thursday and Friday
that is not a day on which banking institutions in the city of New York are
authorized or obligated by law or executive order to close.

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      "Commission" means the Securities and Exchange Commission, or any other
federal agency at the time administering the Exchange Act or the Securities Act,
whichever is the relevant statute for the particular purpose.

      "Common Stock" means the Company's common stock, par value $0.001 per
share.

      "DTC" means The Depository Trust Company.

      "Effectiveness Period" has the meaning assigned thereto in Section 2(b)(i)
hereof.

      "Effective Time" means the time at which the Commission declares any Shelf
Registration Statement effective or at which any Shelf Registration Statement
otherwise becomes effective.

      "Exchange Act" means the United States Securities Exchange Act of 1934, as
amended.

      "Holder" means any person that is the record owner of Registrable
Securities (and includes any person that has a beneficial interest in any
Registrable Security in book-entry form).

      "Indenture" means the Indenture, dated as of December 7, 2004, between the
Company and American Stock Transfer & Trust Company, pursuant to which the
Securities are to be issued, and as amended and supplemented from time to time
in accordance with its terms.

      "Issue Date" means the first date of original issuance of the Securities.

      "Majority of Holders" means Holders holding over 50% of the aggregate
principal amount of Registrable Securities outstanding.

      "Notice and Questionnaire" means a Selling Securityholder Notice and
Questionnaire substantially in the form of Appendix A hereto.

      "Notice Holder" has the meaning assigned thereto in Section 3(a)(iii)
hereof.

      The term "person" means an individual, partnership, corporation, trust or
unincorporated organization, or a government or agency or political subdivision
thereof.

      "Prospectus" means the prospectus included in any Shelf Registration
Statement, as amended or supplemented by any prospectus supplement with respect
to the terms of the offering of any portion of the Registrable Securities
covered by any Shelf Registration Statement and by all other amendments and
supplements to such prospectus, including all material incorporated by reference
in such prospectus and all documents filed after the date of such prospectus by
the Company under the Exchange Act and incorporated by reference therein.

      "Registrable Securities" means all or any portion of the Securities issued
from time to time under the Indenture and the shares of Common Stock issuable
upon conversion of such Securities until the earlier of: (x) the date on which
such security has been registered under the Securities Act and disposed of
pursuant to an effective registration statement, (y) the date that is two years
after the later of (1) the last date of original issuance of the Securities and
(2) the last date that the Company or any of its Affiliates was the owner of
such Securities (or any

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predecessor thereto), or such shorter period of time as permitted by Rule 144(k)
under the Securities Act or any successor provisions thereunder or (z) its sale
to the public pursuant to Rule 144 under the Securities Act.

      "Registration Default" has the meaning assigned thereto in Section 7(a)
hereof.

      "Securities Act" means the United States Securities Act of 1933, as
amended.

      "Shelf Registration" means a registration effected pursuant to Section 2
hereof.

      "Shelf Registration Statement" means a "shelf" registration statement
filed under the Securities Act providing for the registration of, and the sale
on a continuous or delayed basis by the Holders of, all of the Registrable
Securities pursuant to Rule 415 under the Securities Act and/or any similar rule
that may be adopted by the Commission, filed by the Company pursuant to the
provisions of Section 2 of this Agreement, including the Prospectus contained
therein, any amendments and supplements to such registration statement,
including post-effective amendments, and all exhibits and all material
incorporated by reference in such registration statement, and any additional
"shelf" registration statements filed under the Securities Act to permit the
registration and sale of Registrable Securities pursuant to Section 3(a)(ii)
hereof.

      "Suspension Period" has the meaning assigned thereto in Section 2(c)
hereof.

      "Trust Indenture Act" means the Trust Indenture Act of 1939, or any
successor thereto, and the rules, regulations and forms promulgated thereunder,
as the same shall be amended from time to time.

      The term "underwriter" means any underwriter, or any person deemed to be
an underwriter pursuant to the Securities Act and Exchange Act and the
respective rules and regulations thereunder, as in effect at any relevant time,
of Registrable Securities in connection with an offering thereof under a Shelf
Registration Statement.

      (b)   Wherever there is a reference in this Agreement to a percentage of
the "principal amount" of Registrable Securities or to a percentage of
Registrable Securities, each share of Common Stock issued upon conversion of the
Securities shall represent a principal amount or percentage of Registrable
Securities determined based on a quotient, (i) the numerator of which shall be
equal to the aggregate principal amount of Securities issued, less the aggregate
principal amount of Securities outstanding as of the date of determination, and
(ii) the denominator of which shall be equal to the aggregate number of shares
of Common Stock issued upon conversion of the Securities as of the date of
determination.

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      2.    Shelf Registration.

      (a)   The Company shall, no later than 90 calendar days following the
Issue Date, file with the Commission a Shelf Registration Statement relating to
the offer and sale of the Registrable Securities by the Holders from time to
time in accordance with the methods of distribution elected by such Holders,
subject to Section 3(n) hereof, and, thereafter, shall use its reasonable best
efforts to cause such initial Shelf Registration Statement to be declared
effective under the Securities Act no later than 180 calendar days following the
Issue Date; provided, however, that no Holder shall be entitled to be named as a
selling securityholder in any Shelf Registration Statement as of the date it is
declared effective or to use the Prospectus forming a part thereof for offers
and resales of Registrable Securities unless such Holder is a Notice Holder.

      (b)   The Company shall use its reasonable best efforts:

            (i)   to keep any Shelf Registration Statement effective,
      supplemented and amended as required by the provisions of Section 3(j)
      hereof, in order to permit the Prospectus forming a part thereof to be
      usable by Holders until the earlier of two years from the last date of
      original issuance of any Registrable Securities or such shorter period
      ending on the date that all Registrable Securities have ceased to be
      Registrable Securities (such period being referred to herein as the
      "Effectiveness Period"); and

            (ii)  after the Effective Time of the initial Shelf Registration
      Statement, as promptly as practicable but in any event within 5 Business
      Days or, if the Company is required to file with the Commission a new, or
      post-effective amendment to a, Shelf Registration Statement, 30 calendar
      days, of the receipt of a completed Notice and Questionnaire from any
      Holder of Registrable Securities that is not then a Notice Holder, to take
      any action reasonably necessary to enable such Holder to use the
      Prospectus forming a part thereof for resales of Registrable Securities,
      including, without limitation, any action necessary to identify such
      Holder as a selling securityholder in a Shelf Registration Statement;
      provided, however, that nothing in this subparagraph shall relieve such
      Holder of the obligation to return a completed and signed Notice and
      Questionnaire to the Company in accordance with Section 3(a)(ii) hereof.
      Notwithstanding the foregoing, the Company shall not be required to file
      more than one post-effective amendment to the Registration Statement in
      any calendar quarter.

The Company shall be deemed not to have used its reasonable best efforts to keep
any Shelf Registration Statement effective during the Effectiveness Period if
the Company voluntarily takes any action that would result in Holders of
Registrable Securities covered thereby not being able to offer and sell any of
such Registrable Securities during that period, unless such action is (A)
required by applicable law and the Company thereafter promptly complies with the
requirements of paragraph 3(j) below or (B) permitted pursuant to Section 2(c)
below.

      (c)   The Company may suspend the use of any Prospectus for a period not
to exceed 45 days in any 90-day period or an aggregate of 90 days in any
12-month period, during the period beginning on the last date of original
issuance and ending on or prior to the second anniversary of the last date of
original issuance of any Securities (each, a "Suspension Period") if the Board
of Directors of the Company shall have determined in good faith that because of
valid business reasons (not including avoidance of the Company's obligations
hereunder), including

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the acquisition or divestiture of assets, pending corporate developments and
similar events or because of filings with the Commission, it is in the best
interests of the Company to suspend such use, and prior to suspending such use
the Company provides the Holders with written notice of such suspension, which
notice need not specify the nature of the event giving rise to such suspension.

      3.    Registration Procedures. In connection with the Shelf Registration
Statements, the following provisions shall apply:

            (a)(i)  Not less than 30 calendar days prior to the intended
      Effective Time of the initial Shelf Registration Statement, the Company
      shall distribute the Notice and Questionnaire to the Holders of
      Registrable Securities. The Company shall take action to name each Holder
      that is a Notice Holder as of the date that is 5 Business Days prior to
      the effectiveness of the initial Shelf Registration Statement as a selling
      securityholder in the initial Shelf Registration Statement at the time of
      its effectiveness so that such Holder is permitted to deliver the
      Prospectus forming a part thereof as of such time to purchasers of such
      Holder's Registrable Securities in accordance with applicable law. The
      Company shall not be required to take any action to name any Holder as a
      selling securityholder in the initial Shelf Registration Statement or to
      enable any Holder to use the Prospectus forming a part thereof for resales
      of Registrable Securities until such Holder has returned a completed and
      signed Notice and Questionnaire to the Company.

              (ii)  From and after the Effective Time of the initial Shelf
      Registration Statement, the Company shall, upon the request of any Holder
      of Registrable Securities that is not then a Notice Holder, promptly send
      a Notice and Questionnaire to such Holder. From and after the Effective
      Time of the initial Shelf Registration Statement, the Company shall (A) as
      promptly as is practicable after the date a completed and signed Notice
      and Questionnaire is delivered to the Company, and in any event within 5
      Business Days or, if the Company is required to file with the Commission a
      new, or post-effective amendment to a, Shelf Registration, 30 calendar
      days, after such date, prepare and file with the Commission (x) a
      supplement to the Prospectus or, if required by applicable law, a
      post-effective amendment to the Shelf Registration Statement or an
      additional Shelf Registration Statement and (y) any other document
      required by applicable law, so that the Holder delivering such Notice and
      Questionnaire is named as a selling securityholder in a Shelf Registration
      Statement and is permitted to deliver the Prospectus to purchasers of such
      Holder's Registrable Securities in accordance with applicable law and (B)
      if the Company shall file a post-effective amendment to the Shelf
      Registration Statement, or an additional Shelf Registration Statement, use
      its reasonable best efforts to cause such post-effective amendment or such
      additional Shelf Registration Statement to become effective under the
      Securities Act as promptly as is practicable, but in any event by the date
      that is (i) 10 Business Days after the date such post-effective amendment
      is filed with the Commission or (ii) 45 calendar days after the date such
      additional Shelf Registration Statement is required to be filed; provided,
      however, that if a Notice and Questionnaire is delivered to the Company
      during a Suspension Period, the Company shall not be obligated to take the
      actions set forth in this clause (ii) until the termination of such
      Suspension Period. Notwithstanding the foregoing, the Company

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      shall not be required to file more than one post-effective amendment to
      the Registration Statement in any calendar quarter.

              (iii) The term "Notice Holder" shall mean any Holder of
      Registrable Securities that has returned a completed and signed Notice and
      Questionnaire to the Company in accordance with Section 3(a)(i) or
      3(a)(ii) hereof.

      (b)   Before filing any Shelf Registration Statement or Prospectus or any
amendments or supplements (other than supplements solely for the purpose of
naming one or more Notice Holders as selling securityholders) thereto with the
Commission, furnish to the Initial Purchasers copies of all such documents
proposed to be filed and use efforts to reflect in each such document when so
filed with the Commission such comments as the Initial Purchasers reasonably
shall reasonably propose within three (3) Business Days of the delivery of such
copies to the Initial Purchasers.

      (c)   The Company shall promptly take such action as may be necessary so
that (i) each of the Shelf Registration Statements and any amendment thereto and
the Prospectus forming a part thereof and any amendment or supplement thereto
(and each report or other document incorporated therein by reference in each
case) complies in all material respects with the Securities Act and the Exchange
Act and the respective rules and regulations thereunder, as in effect at any
relevant time, (ii) each of the Shelf Registration Statements and any amendment
thereto does not, when it becomes effective, contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading, and (iii) each of the
Prospectus forming a part of any Shelf Registration Statement, and any amendment
or supplement to such Prospectus, in the form delivered to purchasers of the
Registrable Securities during the Effectiveness Period does not include an
untrue statement of a material fact or omit to state a material fact necessary
in order to make the statements therein, in the light of the circumstances under
which they were made, not misleading.

      (d)   The Company shall promptly advise each Notice Holder, and shall
confirm such advice in writing if so requested by any such Notice Holder:

            (i)   when the initial Shelf Registration Statement has been filed
      with the Commission and when the initial Shelf Registration Statement has
      become effective, in each case making a public announcement thereof by
      release made to Dow Jones & Company, Inc. or Bloomberg Business News or
      other similarly broad public medium that is customary for such releases;

            (ii)  when any Prospectus supplement, Shelf Registration Statement
      or post-effective amendment to a Shelf Registration has been filed with
      the Commission and, with respect to a Shelf Registration Statement or any
      post-effective amendment, when the same has been declared effective by the
      Commission;

            (iii) of any request by the Commission for amendments or supplements
      to any Shelf Registration Statement or the Prospectus included therein or
      for additional information, which notice shall be sent to legal counsel
      for the Notice Holders and need not be provided to each Notice Holder;

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            (iv)  of the issuance by the Commission of any stop order suspending
      the effectiveness of any Shelf Registration Statement or the initiation of
      any proceedings for such purpose;

            (v)   of the receipt by the Company of any notification with respect
      to the suspension of the qualification of the securities included in any
      Shelf Registration Statement for sale in any jurisdiction or the
      initiation of any proceeding for such purpose; and

            (vi)  of the happening of any event or the existence of any state of
      facts that requires the making of any changes in any Shelf Registration
      Statement or the Prospectus included therein so that, as of such date,
      such Shelf Registration Statement and Prospectus do not contain an untrue
      statement of a material fact and do not omit to state a material fact
      required to be stated therein or necessary to make the statements therein
      (in the case of the Prospectus, in the light of the circumstances under
      which they were made) not misleading (which advice shall be accompanied by
      an instruction to such Holders to suspend the use of the Prospectus until
      the requisite changes have been made, which notice need not specify the
      nature of the event giving rise to such suspension).

      (e)   The Company shall use its reasonable best efforts to prevent the
issuance, and if issued to obtain the withdrawal at the earliest possible time,
of any order suspending the effectiveness of any Shelf Registration Statement.

      (f)   As promptly as reasonably practicable furnish to each Notice Holder
and each Initial Purchaser, upon their request and without charge, at least one
(1) conformed copy of the Registration Statement and any amendment thereto,
including financial statements but excluding schedules, all documents
incorporated or deemed to be incorporated therein by reference and all exhibits
(unless requested in writing to the Company by such Notice Holder or such
Initial Purchaser, as the case may be).

      (g)   The Company shall, during the Effectiveness Period, deliver to each
Notice Holder, without charge, as many copies of each Prospectus in which the
Notice Holder is listed as a selling securityholder included in the applicable
Shelf Registration Statement and any amendment or supplement thereto as such
Notice Holder may reasonably request; and the Company consents (except during a
Suspension Period or during the continuance of any event described in Section
3(d) (iii)-(vi) above) to the use of the Prospectus and any amendment or
supplement thereto by each of the Notice Holders in connection with the offering
and sale of the Registrable Securities covered by the Prospectus and any
amendment or supplement thereto during the Effectiveness Period.

      (h)   Prior to any offering of Registrable Securities pursuant to a Shelf
Registration Statement, the Company shall (i) register or qualify or cooperate
with the Notice Holders and their respective counsel in connection with the
registration or qualification of such Registrable Securities for offer and sale
under the securities or "blue sky" laws of such jurisdictions within the United
States as any Notice Holder may reasonably request, (ii) keep such registrations
or qualifications in effect and comply with such laws so as to permit the
continuance of offers and sales in such jurisdictions for so long as may be
necessary to enable any Notice Holder or underwriter, if any, to complete its
distribution of Registrable Securities pursuant to such Shelf

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Registration Statement, and (iii) take any and all other actions necessary or
advisable to enable the disposition in such jurisdictions of such Registrable
Securities; provided, however, that in no event shall the Company be obligated
to (A) qualify as a foreign corporation or as a dealer in securities in any
jurisdiction where it would not otherwise be required to so qualify but for this
Section 3(h) or (B) subject itself to general or unlimited service of process or
to taxation in any such jurisdiction if they are not now so subject.

      (i)   Unless any Registrable Securities shall be in book-entry only form,
the Company shall cooperate with the Notice Holders to facilitate the timely
preparation and delivery of certificates representing Registrable Securities to
be sold pursuant to any Shelf Registration Statement, which certificates, if so
required by any securities market or exchange upon which any Registrable
Securities are quoted or listed, shall be penned, lithographed or engraved, or
produced by any combination of such methods, on steel engraved borders, and
which certificates shall be free of any restrictive legends and in such
permitted denominations and registered in such names as Notice Holders may
request in connection with the sale of Registrable Securities pursuant to such
Shelf Registration Statement.

      (j)   Upon the occurrence of any fact or event contemplated by paragraph
3(d)(vi) above, subject to Section 2(c) hereof, the Company shall promptly, but
in any event within seven Business Days following such occurrence, prepare, file
(and use its reasonable best efforts to have declared effective) a
post-effective amendment to any Shelf Registration Statement or an amendment or
supplement to the related Prospectus included therein or file any other document
with the Commission so that, as thereafter delivered to purchasers of the
Registrable Securities, the Prospectus will not include an untrue statement of a
material fact or omit to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading. If the Company notifies the Notice Holders of the
occurrence of any fact or event contemplated by paragraph 3(d)(vi) above, the
Notice Holder shall suspend the use of the Prospectus until the requisite
changes to the Prospectus have been made.

      (k)   Not later than the Effective Time of a Shelf Registration Statement,
the Company shall provide a CUSIP number for the debt securities to be sold
pursuant to a Shelf Registration Statement.

      (l)   The Company shall comply with the Securities Act and the Exchange
Act and the respective rules and regulations thereunder, as in effect at any
relevant time, and make generally available to its securityholders earnings
statements (which need not be audited) satisfying the provisions of Section
11(a) of the Securities Act and Rule 158 thereunder (or any similar rule
promulgated under the Securities Act) no later than 45 days after the end of any
12-month period (or 90 days after the end of any 12-month period if such period
is a fiscal year), or such shorter period as required by the Securities Act and
the Exchange Act and the rules and regulations thereunder, as in effect at any
relevant time, commencing on the first day of the first fiscal quarter of the
Company commencing after (i) the effective date of a Shelf Registration
Statement, (ii) the effective date of each post-effective amendment to such
Shelf Registration Statement, or (iii) the date of each filing by the Company
with the Commission of an Annual Report on Form 10-K that is incorporated by
reference in such Shelf Registration Statement, which statements shall cover
said 12-month periods.

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      (m)   Not later than the Effective Time of the initial Shelf Registration
Statement, the Company shall cause the Indenture to be qualified under the Trust
Indenture Act; in connection with such qualification, the Company shall
cooperate with the Trustee under the Indenture and the Holders (as defined in
the Indenture) to effect such changes to the Indenture as may be required for
such Indenture to be so qualified in accordance with the terms of the Trust
Indenture Act; and the Company shall execute, and shall use its best efforts to
cause the Trustee to execute, all documents that may be required to effect such
changes and all other forms and documents required to be filed with the
Commission to enable such Indenture to be so qualified in a timely manner. In
the event that any such amendment or modification referred to in this Section
3(m) involves the appointment of a new trustee under the Indenture, the Company
shall appoint a new trustee thereunder pursuant to the applicable provisions of
the Indenture.

      (n)   The Company shall enter into such customary agreements and take all
such other actions as are reasonably necessary in connection therewith
(including those reasonably requested by the holders of a majority of the
Registrable Securities being sold) in order to expedite or facilitate
disposition of such Registrable Securities; provided, that the Company shall not
be required to take any action in connection with an underwritten offering
without its consent, with may be withheld in its sole and absolute discretion.

      (o)   The Company shall (A) make reasonably available for inspection by
one or more representatives of the selling Holders, designated in writing by a
Majority of Holders whose Registrable Securities are included in a Shelf
Registration Statement, any underwriter participating in any disposition
pursuant to any Shelf Registration Statement, and any attorney, accountant or
other agent retained by such Notice Holders or any such underwriter all relevant
financial and other records, pertinent corporate documents and properties of the
Company and its subsidiaries, and (B) cause the Company's officers, directors
and employees to supply all information reasonably requested by such Notice
Holders or any such underwriter, attorney, accountant or agent in connection
with such Shelf Registration Statement, in each case, as is customary for
similar due diligence examinations; provided, however, that such persons shall,
at the Company's request, first agree in writing with the Company that all
information shall be kept confidential by such persons and shall be used solely
for the purposes of exercising rights under this Agreement, unless such
disclosure is made in connection with a court proceeding or required by law, or
such records, information or documents become available to the public generally
or through a third party without an accompanying obligation of confidentiality;
and provided further that, if the foregoing inspection and information gathering
would otherwise disrupt the Company's conduct of its business, such inspection
and information gathering shall, to the greatest extent possible, be coordinated
on behalf of the Notice Holders and the other parties entitled thereto by one
counsel designated by and on behalf of the Notice Holders and other parties.

      (p)   The Company will use its reasonable best efforts to cause the Common
Stock issuable upon conversion of the Securities to be quoted or listed on the
Nasdaq National Market or other market or stock exchange on which the Common
Stock primarily trades on or prior to the Effective Time of each Shelf
Registration Statement hereunder.

      (q)   The Company will cooperate and assist in any filings or by taking
any other actions reasonably required to be made or taken with or by National
Association of Securities Dealers, Inc.

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      (r)   The Company shall use its reasonable best efforts to take all other
steps necessary to effect the registration, offering and sale of the Registrable
Securities covered by each Shelf Registration Statement contemplated hereby.

      4.    Registration Expenses. The Company shall bear all fees and expenses
incurred in connection with the performance by the Company of its obligations
under Sections 2 and 3 of this Agreement whether or not any of the Shelf
Registration Statements are declared effective. Such fees and expenses shall
include, without limitation, (i) all registration and filing fees (including,
without limitation, fees and expenses (x) with respect to filings required to be
made with the National Association of Securities Dealers, Inc. and (y) of
compliance with federal and state securities or Blue Sky laws to the extent such
filings or compliance are required pursuant to this Agreement (including,
without limitation, reasonable fees and disbursements of the counsel specified
in the next sentence in connection with Blue Sky qualifications of the
Registrable Securities under the laws of such jurisdictions as the Notice
Holders of a majority of the Registrable Securities being sold pursuant to a
Shelf Registration Statement may designate)), (ii) printing expenses (including,
without limitation, expenses of printing certificates for Registrable Securities
in a form eligible for deposit with The Depository Trust Company), (iii)
duplication expenses relating to copies of any Shelf Registration Statement or
Prospectus delivered to any Holders hereunder, (iv) fees and disbursements of
counsel for the Company in connection with the Shelf Registration Statement, and
(v) reasonable fees and disbursements of the Trustee and its counsel and of the
registrar and transfer agent for the Common Stock. In addition, the Company
shall pay the internal expenses of the Company (including, without limitation,
all salaries and expenses of officers and employees performing legal or
accounting duties), the expense of any annual audit, the fees and expenses
incurred in connection with the listing of the Registrable Securities on any
securities exchange on which similar securities of the Company are then listed
and the fees and expenses of any person, including special experts, retained by
the Company.

      5.    Indemnification and Contribution.

      (a)   Indemnification by the Company. The Company shall indemnify and hold
harmless each Notice Holder, each Initial Purchaser, and each person, if any,
who controls any such Notice Holder or Initial Purchaser within the meaning of
Section 15 of the Securities Act or Section 20 of the Exchange Act, from and
against any loss, claim, damage, liability or expense whatsoever incurred
(including but not limited to attorneys' fees and any and all expenses
whatsoever incurred in investigating, preparing or defending against any
litigation, commenced or threatened, or any claim whatsoever, and any and all
amounts paid in settlement of any claim or litigation), joint or several, to
which they or any of them may become subject under the Securities Act, the
Exchange Act or otherwise, insofar as any such loss, claim, damage, liability or
expense (or action in respect thereof) arises out of, or is based upon, any
untrue statement or alleged untrue statement of a material fact contained in the
Shelf Registration Statement or any amendment thereto or any related preliminary
prospectus or the Prospectus or any amendment thereto of supplement thereof, or
arises out of, or is based upon, the omission or alleged omission to state
therein any material fact required to be stated therein or necessary to make the
statements therein not misleading; provided, however, that the Company shall not
be liable to any such indemnified party in any such case to the extent that any
such loss, claim, damage, liability or expense arises out of, or is based upon,
any such untrue statement or alleged untrue statement or

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omission or alleged omission made therein in reliance upon and in conformity
with written information furnished to the Company by or on behalf of such
indemnified party specifically for use therein; and provided further, however,
that the Company shall not be liable to any such indemnified party in any such
case to the extent that such loss, claim, damage, liability or expense arises
from an offer or sale by a Notice Holder of Registrable Securities during a
Suspension Period, if such indemnified party is a Notice Holder that was
provided by the Company a notice of the commencement of such Suspension Period
prior to the making of such offer or sale. The foregoing indemnity agreement is
in addition to any liability that the Company may otherwise have to any
indemnified party.

      (b)   Indemnification by the Notice Holders. Each Notice Holder, severally
and not jointly, shall indemnify and hold harmless the Company, each director
and each officer of the Company, each Initial Purchaser, and each person, if
any, who controls the Company or any such Initial Purchaser within the meaning
of Section 15 of the Securities Act or Section 20 of the Exchange Act, from and
against any loss, claim, damage, liability or expense whatsoever incurred
(including but not limited to attorneys' fees and any and all expenses
whatsoever incurred in investigating, preparing or defending against any
litigation, commence or threatened, or any claim whatsoever, and any and all
amounts paid in settlement of any claim or litigation), joint or several, to
which they or any of them may become subject under the Securities Act, the
Exchange Act or otherwise, insofar as any such loss, claim, damage, liability or
expense (or action in respect thereof) arises out of, or is based upon, any
untrue statement or alleged untrue statement of a material fact contained in the
Shelf Registration Statement or any amendment thereto or any related preliminary
prospectus or the Prospectus or any amendment thereto of supplement thereof, or
arises out of, or is based upon, the omission or alleged omission to state
therein any material fact required to be stated therein or necessary to make the
statements therein not misleading, in each case to the extent, but only to the
extent, that such untrue statement or alleged untrue statement or omission or
alleged omission made therein was made in reliance upon and in conformity with
written information furnished to the Company by or on behalf of such Notice
Holder specifically for use therein. In no event shall the liability of any
selling Notice Holder hereunder be greater in amount than the dollar amount of
the proceeds received by such Holder upon the sale of the Registrable Securities
pursuant to the Shelf Registration Statement giving rise to such indemnification
obligation. The foregoing indemnity agreement is in addition to any liability
that any Notice Holder may otherwise have to the Company, any such Initial
Purchaser and any such controlling person.

      (c)   Notices of Claims, Etc. Promptly after receipt by an indemnified
party under this Section 5 of notice of any claim or the commencement of any
action, the indemnified party shall, if a claim in respect thereof is to be made
against the indemnifying party under this Section 5, notify the indemnifying
party in writing of the claim or the commencement of that action; provided,
however, that the failure to notify the indemnifying party shall not relieve it
from any liability that it may have under this Section 5. If any such claim or
action shall be brought against an indemnified party, and it shall notify the
indemnifying party thereof, the indemnifying party shall be entitled to
participate therein and, to the extent that it wishes, jointly with any other
similarly notified indemnifying party, to assume the defense thereof with
counsel satisfactory to the indemnified party. After notice from the
indemnifying party to the indemnified party of its election to assume the
defense of such claim or action, the indemnifying party shall not be liable to
the indemnified party under this Section 5 for any legal or other expenses
subsequently

                                       11
<PAGE>

incurred by the indemnified party in connection with the defense thereof other
than reasonable costs of investigation; provided, however, that the indemnified
party shall have the right to employ counsel to represent jointly the
indemnified party and its respective directors, employees, officers and
controlling persons who may be subject to liability arising out of any claim in
respect of which indemnity may be sought by the indemnified party against the
indemnifying party under this Section 5 if (1) employment of such counsel has
been authorized in writing by the indemnifying party, or (2) such indemnifying
party shall not have employed counsel to have charge of the defense of such
proceeding within 30 days of the receipt of notice thereof, or (3) such
indemnified party shall have reasonably concluded that the representation of
such indemnified party and those directors, employees, officers and controlling
persons by the same counsel representing the indemnifying party would be
inappropriate under applicable standards of professional conduct due to actual
or potential differing interests between them or where there may be one or more
defenses available to them that are different from, additional to or in conflict
with those available to the indemnifying party, and in any such event ((1), (2)
or (3)) the fees and expenses of such separate counsel shall be paid by the
indemnifying party as incurred. It is understood that the indemnifying party
shall not be liable for the fees and expenses of more than one separate firm (in
addition to local counsel in each jurisdiction) for all indemnified parties in
connection with any proceeding or related proceedings. No indemnifying party
shall, without the prior written consent of the indemnified parties, effect any
settlement or compromise of, or consent to the entry of judgment with respect
to, any pending or threatened claim, investigation, action or proceeding in
respect of which indemnity or contribution may be or could have been sought
hereunder (whether or not the indemnified party or parties are actual or
potential parties thereto) unless (x) such settlement, compromise or judgment
(i) includes an unconditional release of such indemnified party from all
liability arising out of such claim, action, suit or proceeding and (ii) does
not include a statement as to or an admission of fault, culpability or failure
to act by or on behalf of any indemnified party, and (y) the indemnifying party
confirms in writing its indemnification obligations hereunder with respect to
such settlement, compromise or judgment.

      (d)   Contribution. If the indemnification provided for in this Section 5
is unavailable or insufficient to hold harmless an indemnified party under
subsections (a) or (b) above, then each indemnifying party shall contribute to
the amount paid or payable by such indemnified party as a result of the losses,
claims, damages, expenses or liabilities (or actions in respect thereof)
referred to in subsection (a) or (b) above (i) in such proportion as is
appropriate to reflect the relative benefits received by the indemnifying party
or parties on the one hand and the indemnified party on the other from the
registration of the Registrable Securities pursuant to the Shelf Registration,
or (ii) if the allocation provided by the foregoing clause (i) is not permitted
by applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault of
the indemnifying party or parties on the one hand and the indemnified party on
the other in connection with the statements or omissions that resulted in such
losses, claims, damages or liabilities (or actions in respect thereof) as well
as any other relevant equitable considerations. The relative fault of the
parties shall be determined by reference to, among other things, whether the
untrue or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact relates to information supplied by the Company
on the one hand or such Holder or such other indemnified party, as the case may
be, on the other, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.
The amount paid

                                       12
<PAGE>

by an indemnified party as a result of the losses, claims, damages or
liabilities referred to in the first sentence of this subsection (d) shall be
deemed to include any legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any action or
claim which is the subject of this subsection (d). The Company and the Holders
agree that it would not be just and equitable if contribution pursuant to this
Section 5(d) were determined by pro rata allocation or by any other method of
allocation which does not take account of the equitable considerations referred
to herein. Notwithstanding any other provision of this Section 5(d), the Holders
of the Registrable Securities shall not be required to contribute any amount in
excess of the amount by which the gross proceeds received by such Holders from
the sale of the Registrable Securities pursuant to the Shelf Registration
Statement exceeds the amount of damages which such Holders have otherwise been
required to pay by reason of such untrue or alleged untrue statement or omission
or alleged omission. No person guilty of fraudulent misrepresentation (within
the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation. For purposes of this paragraph (d), each person, if any, who
controls such indemnified party within the meaning of the Securities Act or the
Exchange Act shall have the same rights to contribution as such indemnified
party and each person, if any, who controls the Company within the meaning of
the Securities Act or the Exchange Act shall have the same rights to
contribution as the Company. The Holders' respective obligations to contribute
pursuant to this Section 5 are several in proportion to the respective amount of
Registrable Securities they have sold pursuant to a Registration Statement and
not joint. The remedies provided for in this Section 5 are not exclusive and
shall not limit any rights or remedies which may otherwise be available to any
indemnified party at law or in equity.

      (e)   The indemnity and contribution provisions contained in this Section
5 shall remain operative and in full force and effect regardless of (i) any
termination of this Agreement, (ii) any investigation made by or on behalf of
any Initial Purchaser, any Holder or any person controlling such Initial
Purchaser or Holder, or by or on behalf of the Company, its officers or
directors or any person controlling the Company, and (iii) any sale of
Registrable Securities pursuant to the Shelf Registration Statement.

      6.    Holder's Obligations. Each Holder agrees, by acquisition of the
Registrable Securities, that no Holder of Registrable Securities shall be
entitled to sell any of such Registrable Securities pursuant to a Shelf
Registration Statement or to receive a Prospectus relating thereto, unless such
Holder has furnished the Company with a Notice and Questionnaire as required
pursuant to Section 3(a)(ii) hereof (including the information required to be
included in such Notice and Questionnaire) and the information set forth in the
next sentence. Each Notice Holder agrees promptly to furnish to the Company all
information required to be disclosed in order to make the information previously
furnished to the Company by such Notice Holder not misleading and any other
information regarding such Notice Holder and the distribution of such
Registrable Securities as the Company may from time to time reasonably request.
Any sale of any Registrable Securities by any Notice Holder shall constitute a
representation and warranty by such Notice Holder that the information relating
to such Notice Holder and its plan of distribution is as set forth in the
Prospectus delivered by such Notice Holder in connection with such disposition,
that such Prospectus does not as of the time of such sale contain any untrue
statement of a material fact relating to or provided by such Notice Holder or
its plan of distribution and that such Prospectus does not as of the time of
such sale omit to

                                       13
<PAGE>

state any material fact relating to or provided by such Notice Holder or its
plan of distribution necessary in order to make the statements in such
Prospectus, in the light of the circumstances under which they were made, not
misleading.

      7.    Additional Interest.

      (a)   Notwithstanding any postponement of the effectiveness pursuant to
Section 2(a) hereof, if (i) on or prior to the 90th day following the Issue
Date, a Shelf Registration Statement has not been filed with the Commission,
(ii) on or prior to the 180th day following the Issue Date, such initial Shelf
Registration Statement is not declared effective by the Commission, (iii) after
the effectiveness date of any Shelf Registration Statement, (x) such Shelf
Registration Statement ceases to be effective or usable for the offer and sale
of Registrable Securities (other than due to a Suspension Period), and the
Company fails to file (and use its reasonable best efforts to have declared
effective), within seven Business Days, a post-effective amendment to such Shelf
Registration Statement or amendment or supplement to the Prospectus contained
therein or such other document with the Commission to make such Shelf
Registration Statement effective or such Prospectus usable, or (y) the
Suspension Periods exceed 45 days, whether or not consecutive, in any 90-day
period, or more than 90 days, whether or not consecutive, during any 12-month
period during the Effectiveness Period, or (iv) the Company shall have failed to
timely comply in all material respects with any of its obligations set forth in
Section 3(a)(ii) hereof (each, a "Registration Default"), the Company shall be
required to pay additional interest ("Additional Interest") pursuant to the
Securities, from and including the day following such Registration Default to
but excluding the day on which such Registration Default is cured, at a rate per
annum equal to an additional one-quarter of one percent (0.25%) of the principal
amount of the Securities to and including the 90th day following such
Registration Default, and one-half of one percent (0.5%) thereof from and after
the 91st day following such Registration Default.

      (b)   In the case of a Registration Default described in Sections
7(a)(i)-(iii) above, Additional Interest, if any, shall be payable only to
Notice Holders and, in respect of a Registration Default described in Section
7(a)(iv) above, Additional Interest, if any, shall be payable only to Notice
Holders to whom such Registration Default relates.

      (c)   Any amounts to be paid as Additional Interest pursuant to paragraph
(a) of this Section 7 shall be paid in cash semiannually in arrears, with the
first semiannual payment due on the first interest payment date following the
date on which such Additional Interest begins to accrue, to the Notice Holders
in whose name the Securities are registered at the close of business on May 15,
or November 15, whether or not a Business Day, immediately preceding the
relevant interest payment date.

      (d)   Except as provided in Section 8(a) hereof, and in Section 12.1(a) of
the Indenture, the Additional Interest as set forth in this Section 7 shall be
the exclusive monetary remedy available to the Holders of Registrable Securities
for such Registration Default. In no event shall the Company be required to pay
Additional Interest in excess of the applicable maximum amount of one-half of
one percent (0.5%) set forth above, regardless of whether one or multiple
Registration Defaults exist.

                                       14
<PAGE>

      8.    Miscellaneous.

      (a)   Specific Performance. The parties hereto acknowledge that there
would be no adequate remedy at law if the Company fails to perform any of its
obligations hereunder and that the Initial Purchasers and the Holders from time
to time may be irreparably harmed by any such failure, and accordingly agree
that the Initial Purchasers and such Holders, in addition to any other remedy to
which they may be entitled at law or in equity and without limiting the remedies
available to the Notice Holders under Section 7 hereof, shall be entitled to
compel specific performance of the obligations of the Company under this
Registration Rights Agreement in accordance with the terms and conditions of
this Registration Rights Agreement, in any court of the United States or any
State thereof having jurisdiction.

      (b)   Amendments and Waivers. This Agreement, including this Section 8(b),
may be amended, and waivers or consents to departures from the provisions hereof
may be given, only by a written instrument duly executed by the Company and a
Majority of Holders. Each Holder of Registrable Securities outstanding at the
time of any such amendment, waiver or consent or thereafter shall be bound by
any amendment, waiver or consent effected pursuant to this Section 8(b), whether
or not any notice, writing or marking indicating such amendment, waiver or
consent appears on the Registrable Securities or is delivered to such Holder.

      (c)   Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand delivery, by telecopier, by
courier guaranteeing overnight delivery or by first-class mail, return receipt
requested, and shall be deemed given (i) when made, if made by hand delivery,
(ii) upon confirmation, if made by telecopier, (iii) one (1) Business Day after
being deposited with such courier, if made by overnight courier or (iv) on the
date indicated on the notice of receipt, if made by first-class mail, to the
parties as follows:

            (w) if to a Holder of Registrable Securities, at the most current
      address given by such Holder to the Company in a Notice and Questionnaire
      or any amendment thereto;

            (x) if to the Company, to:

            Synaptics Incorporated
            2381 Bering Drive
            San Jose, California 95131
            Attention:  Kermit Nolan
            Telephone : (408) 434-0110
            Facsimile: (408) 432-3361

            With a copy to:

            Greenberg Traurig, LLP
            2375 E. Camelback Road, Suite 700
            Phoenix, Arizona 85016
            Attention: Robert S. Kant
            Facsimile:  (602) 445-8100

            and

                                       15
<PAGE>

            (y) if to the Initial Purchasers, to:

            Bear, Stearns & Co. Inc.
            383 Madison Avenue
            New York, NY  10179
            Attention: Stephen Parish
            Facsimile: (212) 272-3485

or to such other address as such person may have furnished to the other persons
identified in this Section 8(c) in writing in accordance herewith.

      (d)   Parties in Interest. The parties to this Agreement intend that all
Holders of Registrable Securities shall be entitled to receive the benefits of
this Agreement and that any Notice Holder shall be bound by the terms and
provisions of this Agreement by reason of such election with respect to the
Registrable Securities which are included in a Shelf Registration Statement. All
the terms and provisions of this Agreement shall be binding upon, shall inure to
the benefit of and shall be enforceable by the respective successors and assigns
of the parties hereto and any Holder from time to time of the Registrable
Securities to the aforesaid extent. In the event that any transferee of any
Holder of Registrable Securities shall acquire Registrable Securities, in any
manner, whether by gift, bequest, purchase, operation of law or otherwise, such
transferee shall, without any further writing or action of any kind, be entitled
to receive the benefits of and, if a Notice Holder, be conclusively deemed to
have agreed to be bound by and to perform all of the terms and provisions of
this Agreement to the aforesaid extent.

      (e)   Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

      (f)   Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

      (g)   Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York.

      (h)   Severability. In the event that any one or more of the provisions
contained herein, or the application thereof in any circumstances, is held
invalid, illegal or unenforceable in any respect for any reason, the validity,
legality and enforceability of any such provision in every other respect and of
the remaining provisions hereof shall not be in any way impaired or affected
thereby, it being intended that all of the rights and privileges of the parties
hereto shall be enforceable to the fullest extent permitted by law.

      (i)   Survival. The respective indemnities, agreements, representations,
warranties and other provisions set forth in this Agreement or made pursuant
hereto shall remain in full force and effect, regardless of any investigation
(or any statement as to the results thereof) made by or on behalf of any Notice
Holder, any director, officer or partner of such Holder, any agent or
underwriter, any director, officer or partner of such agent or underwriter, or
any controlling

                                       16
<PAGE>

person of any of the foregoing, and shall survive the transfer and registration
of the Registrable Securities of such Holder.

      9.    Submission to Jurisdiction; Appointment of Agent for Service

      The Company agrees that any suit, action or proceeding against the Company
arising out of or based upon this Agreement or the transactions contemplated
hereby may be instituted in any State or Federal court in the city of New York,
New York, and waives any objection which it may now or hereafter have to the
laying of venue of any such proceeding, and irrevocably submits to the
non-exclusive jurisdiction of such courts in any suit, action or proceeding. The
Company expressly accepts the non-exclusive jurisdiction of any such court in
respect of any such suit, action or proceeding. The Company agrees that a final
judgment in any such proceeding brought in any such court shall be conclusive
and binding thereupon and may be enforced in any other court in the jurisdiction
to which the Company is or may be subject by suit upon such judgment.

                            [Signature Page Follows]

                                       17
<PAGE>

            Please confirm that the foregoing correctly sets forth the agreement
between the Company and you.

                                              Very truly yours,

                                              Synaptics Incorporated

                                              By: /s/ Russell J. Knittel
                                                  ------------------------------
                                                  Name: Russell J. Knittel
                                                  Title: Senior Vice President
                                                         and Chief Financial
                                                         Officer

Accepted as of the date hereof:

      Bear, Stearns & Co. Inc.

      By: /s/ Paul S. Rosica
          -----------------------------
          Name: Paul S. Rosica
          Title: Senior Managing Director

      Credit Suisse First Boston LLC

      By: /s/ John Metz
          -----------------------------
          Name: John Metz
          Title: Managing Director

                [Signature Page to Registration Rights Agreement]

<PAGE>

                                                                      APPENDIX A

                             SYNAPTICS INCORPORATED
             FORM OF SELLING SECURITYHOLDER NOTICE AND QUESTIONNAIRE
              0.75% CONVERTIBLE SENIOR SUBORDINATED NOTES DUE 2024

      The undersigned beneficial owner of 0.75% Convertible Senior Subordinated
Notes due 2024 (the "Notes") of Synaptics Incorporated (the "Company" or
"Registrant") or Common Stock, par value $0.001 per share (the "Common Stock"
and, together with the Notes, the "Registrable Securities"), of the Company
understands that the Registrant has filed or intends to file with the U.S.
Securities and Exchange Commission (the "Commission") a registration statement
on Form S-3 (the "Shelf Registration Statement") for the registration and resale
under Rule 415 of the Securities Act of 1933, as amended (the "Securities Act"),
of the Registrable Securities, in accordance with the terms of the Registration
Rights Agreement, dated as of December 7, 2004 (the "Registration Rights
Agreement"), between the Company and the initial purchasers named therein. A
copy of the Registration Rights Agreement is available from the Company upon
request at the address set forth below. All capitalized terms not otherwise
defined herein shall have the meanings ascribed thereto in the Registration
Rights Agreement.

      Each beneficial owner of Registrable Securities is entitled to the
benefits of the Registration Rights Agreement. In order to sell or otherwise
dispose of any Registrable Securities pursuant to the Shelf Registration
Statement, a beneficial owner of Registrable Securities generally will be
required to be named as a selling securityholder in the related prospectus,
deliver a prospectus to purchasers of Registrable Securities and be bound by the
provisions of the Registration Rights Agreement applicable to such beneficial
owner (including certain indemnification provisions described below). Beneficial
owners that do not complete this Notice and Questionnaire and deliver it to the
Company as provided below will not be named as selling securityholders in the
prospectus and therefore will not be permitted to sell any Registrable
Securities pursuant to the Shelf Registration Statement. Beneficial owners are
encouraged to complete and deliver this Notice and Questionnaire prior to the
effectiveness of the Shelf Registration Statement so that such beneficial owners
may be named as selling securityholders in the related prospectus. Upon receipt
of a completed Notice and Questionnaire from a beneficial owner following the
effectiveness of the Shelf Registration Statement, the Company will, as promptly
as practicable but in any event within (i) 5 business days of such receipt, file
such supplements to the related prospectus, or (ii) 30 calendar days of such
receipt, file a post-effective amendment to the Shelf Registration Statement or
an additional Shelf Registration Statement with the Commission if required to do
so, in each case as are necessary to permit such holder to deliver such
prospectus to purchasers of Registrable Securities. The Company will not be
required, however, to file more than one post-effective amendment to a Shelf
Registration Statement for such purpose in any calendar quarter.

      Certain legal consequences arise from being named as a selling
securityholder in the Shelf Registration Statement and the related prospectus.
Accordingly, holders and beneficial owners of Registrable Securities are advised
to consult their own securities law counsel regarding the consequences of being
named or not being named as a selling securityholder in the Shelf Registration
Statement and the related prospectus.

<PAGE>

                                                                      APPENDIX A

                                     NOTICE

      The undersigned beneficial owner (the "Selling Securityholder") of
Registrable Securities hereby gives notice to the Company of its intention to
sell or otherwise dispose of Registrable Securities beneficially owned by it and
listed below in Item 3 (unless otherwise specified under such Item 3) pursuant
to the Shelf Registration Statement. The undersigned, by signing and returning
this Notice and Questionnaire, understands that it will be bound by the terms
and conditions of this Notice and Questionnaire and the Registration Rights
Agreement.

      Pursuant to the Registration Rights Agreement, the undersigned has agreed
to indemnify and hold harmless the Company's directors and officers and each
person, if any, who controls the Company within the meaning of either Section 15
of the Securities Act or Section 20 of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), from and against certain losses arising in
connection with statements concerning the undersigned made in the Company's
Shelf Registration Statement or the related prospectus in reliance upon the
information provided in this Notice and Questionnaire.

      If the Selling Securityholder transfers all or any portion of the
Registrable Securities listed in Item 3 below after the date on which such
information is provided to the Company, the Selling Securityholder agrees to
notify the transferee(s) at the time of the transfer of its rights and
obligations under this Notice and Questionnaire and the Registration Rights
Agreement.

<PAGE>

                                                                      APPENDIX A

                                  QUESTIONNAIRE

      Please respond to every item, even if your response is "none." If you need
more space for any response, please attach additional sheets of paper. Please be
sure to indicate your name and the number of the item being responded to on each
such additional sheet of paper, and to sign each such additional sheet of paper
before attaching it to this Questionnaire. Please note that you may be asked to
answer additional questions depending on your responses to the following
questions.

      If you have any questions about the contents of this Questionnaire or as
to who should complete this Questionnaire, please contact Mr. Nolan at Synaptics
Incorporated at telephone number: (408) 434-0110.

            COMPLETED QUESTIONNAIRES SHOULD BE RETURNED TO SYNAPTICS
                            INCORPORATED AS FOLLOWS:

            1 COPY BY FACSIMILE TO KERMIT NOLAN, DIRECTOR OF FINANCE,
                               FAX: (408) 432-3361

                      WITH THE ORIGINAL COPY TO FOLLOW TO:
                             SYNAPTICS INCORPORATED
                                2381 BERING DRIVE
                           SAN JOSE, CALIFORNIA 95131
                  ATTENTION: KERMIT NOLAN, DIRECTOR OF FINANCE
                               TEL: (408) 434-0110

      The undersigned hereby provides the following information to the Company
and represents and warrants that such information is accurate and complete:

1.    YOUR IDENTITY AND BACKGROUND AS THE BENEFICIAL OWNER OF THE REGISTRABLE
      SECURITIES

      (a)   Your full legal name:

      (b)   Your business address (including street address) (or residence if no
            business address), telephone number, and facsimile number:

            Address: ___________________________________________________________
                     ___________________________________________________________

            Telephone No.: _____________________________________________________

            Fax No.: ___________________________________________________________

<PAGE>

                                                                      APPENDIX A

      (c)   Are you a broker-dealer registered pursuant to Section 15 of the
            Exchange Act?

            [ ]   Yes.

            [ ]   No.

      (d)   If your response to Item 1(c) above is no, are you an "affiliate" of
            a broker-dealer registered pursuant to Section 15 of the Exchange
            Act?

            [ ]   Yes.

            [ ]   No.

            For the purposes of this Item 1(d), an "affiliate" of a registered
            broker-dealer shall include any company that directly, or indirectly
            through one or more intermediaries, controls, or is controlled by,
            or is under common control with such broker-dealer, and does not
            include any individuals employed by such broker-dealer or its
            affiliates.

      (e)   Full legal name of person through which you hold the Registrable
            Securities (i.e., name of your broker or the DTC participant, if
            applicable, through which your Registrable Securities are held):

            Name of broker: ____________________________________________________

            DTC No.: ___________________________________________________________

            Contact person: ____________________________________________________

            Telephone No.: _____________________________________________________

2.    YOUR RELATIONSHIP WITH SYNAPTICS INCORPORATED

      (a)   Have you or any of your affiliates, officers, directors, or
            principal equity holders (owners of 5% or more of the equity
            securities of the undersigned) held any position or office, or have
            you had any other material relationship with, Synaptics Incorporated
            (or its predecessors or affiliates) within the past three years?

            [ ]   Yes.

            [ ]   No.

      (b)   If your response to Item 2(a) above is yes, please state the nature
            and duration of your relationship with Synaptics Incorporated:

<PAGE>

                                                                      APPENDIX A

3.    YOUR INTEREST IN THE REGISTRABLE SECURITIES

      (a)   State the type of Registrable Securities (Notes or Common Stock) and
            the principal amount or number of such Registrable Securities
            beneficially owned by you. Check any of the following that applies
            to you.

            [ ]   I own Notes:

            Principal amount and CUSIP No. of the Notes beneficially owned:

            Principal Amount: __________________________________________________

            CUSIP No(s): _______________________________________________________

            [ ]   I own shares of Common Stock that were issued upon conversion
                  of the Notes:

            Number of shares and CUSIP No. of the Common Stock beneficially
            owned:

            Number of shares: __________________________________________________

            CUSIP No(s): _______________________________________________________

      (b)   Other than as set forth in your response to Item 3(a) above, do you
            beneficially own any other securities of Synaptics Incorporated
            (including any Notes previously registered under the Securities
            Act)?

            [ ]   Yes.

            [ ]   No.

      (c)   If your answer to Item 3(b) above is yes, state the type, the
            aggregate amount, and CUSIP No. of such other securities of
            Synaptics Incorporated beneficially owned by you:

            Type: ______________________________________________________________

            Aggregate amount: __________________________________________________

            CUSIP No.: _________________________________________________________

      (d)   Did you acquire the securities listed in Item 3(a) above in the
            ordinary course of business?

            [ ]   Yes.

            [ ]   No.

<PAGE>

                                                                      APPENDIX A

      (e)   At the time of your purchase of the securities listed in Item 3(a)
            above, did you have any agreements or understandings, directly or
            indirectly, with any person to distribute the securities?

            [ ]   Yes.

            [ ]   No.

      (f)   If your response to Item 3(e) above is yes, please describe such
            agreements or understandings:

            ____________________________________________________________________
            ____________________________________________________________________

4.    NATURE OF YOUR BENEFICIAL OWNERSHIP

      (a)   If the name of the beneficial owner of the Registrable Securities
            set forth in your response to Item 1(a) above is that of a limited
            partnership, state the names of the general partners of such limited
            partnership:

            ____________________________________________________________________
            ____________________________________________________________________
            ____________________________________________________________________

      (b)   With respect to each general partner listed in Item 4(a) above who
            is not a natural person, and is not publicly held, name each
            shareholder (or holder of partnership interests, if applicable) of
            such general partner. If any of these named shareholders is not a
            natural person or publicly held entity, please provide the same
            information. This process should be repeated until you reach natural
            persons or a publicly held entity.

            ____________________________________________________________________
            ____________________________________________________________________
            ____________________________________________________________________

      (c)   Name your controlling shareholder(s) (the "Controlling Entity"). If
            the Controlling Entity is not a natural person and is not a publicly
            held entity, name each shareholder of such Controlling Entity. If
            any of these named shareholders are not natural persons or publicly
            held entities, please provide the same information. This process
            should be repeated until you reach natural persons or a publicly
            held entity.

<PAGE>

                                                                      APPENDIX A

            (A)(i) Full legal name of Controlling Entity(ies) or natural
                   person(s) that have sole or shared voting or dispositive
                   power over the Registrable Securities:

                   _____________________________________________________________

            (ii)   Name of shareholders:

                   _____________________________________________________________
                   _____________________________________________________________

            (B)(i) Full legal name of Controlling Entity(ies):

                   _____________________________________________________________
                   _____________________________________________________________

            (ii)   Name of shareholders:

                   _____________________________________________________________
                   _____________________________________________________________

IF YOU NEED MORE SPACE FOR THIS RESPONSE, PLEASE ATTACH ADDITIONAL SHEETS OF
PAPER. PLEASE BE SURE TO INDICATE YOUR NAME AND THE NUMBER OF THE ITEM BEING
RESPONDED TO ON EACH SUCH ADDITIONAL SHEET OF PAPER, AND TO SIGN EACH SUCH
ADDITIONAL SHEET OF PAPER BEFORE ATTACHING IT TO THIS QUESTIONNAIRE. PLEASE NOTE
THAT YOU MAY BE ASKED TO ANSWER ADDITIONAL QUESTIONS DEPENDING ON YOUR RESPONSES
TO THESE QUESTIONS.

5.    PLAN OF DISTRIBUTION

Except as set forth below, the undersigned (including its donees or pledgees)
intends to distribute the Registrable Securities listed above in Item 3 pursuant
to the Shelf Registration Statement only as follows (if at all): Such
Registrable Securities may be sold from time to time directly by the undersigned
or, alternatively, through underwriters, broker-dealers, or agents. If the
Registrable Securities are sold through underwriters, broker-dealers, or agents,
the Selling Securityholder will be responsible for underwriting discounts or
commissions or agents' commissions. Such Registrable Securities may be sold in
one or more transactions at fixed prices, at prevailing market prices at the
time of sale, at varying prices determined at the time of sale, or at negotiated
prices. Such sales may be effected in transactions (which may involve block
transactions) (i) on any national securities exchange or quotation service on
which the Registrable Securities may be listed or quoted at the time of sale,
(ii) in the over-the-counter market, (iii) in transactions otherwise than on
such exchanges or services or in the over-the-counter market, or (iv) through
the writing of options. In connection with sales of the Registrable Securities
or otherwise, the undersigned may enter into hedging transactions with
broker-dealers, which may in turn engage in short sales of the Registrable
Securities in the course of hedging positions they assume. The undersigned may
also sell Registrable Securities

<PAGE>

                                                                      APPENDIX A

short and deliver Registrable Securities to close out short positions, or loan
or pledge Registrable Securities to broker-dealers that in turn may sell such
securities.

State any exceptions here:

________________________________________________________________________________
________________________________________________________________________________

Note: In no event will such method(s) of distribution take the form of an
      underwritten offering of the Registrable Securities without the prior
      written agreement of the Company.

      The undersigned acknowledges its obligation to comply with the provisions
of the Exchange Act and the rules thereunder relating to stock manipulation,
particularly Regulation M thereunder (or any successor rules or regulations), in
connection with any offering of Registrable Securities pursuant to the
Registration Rights Agreement. The undersigned agrees that neither it nor any
person acting on its behalf will engage in any transaction in violation of such
provisions.

      The undersigned beneficial owner and selling securityholder hereby
acknowledges its obligations under the Registration Rights Agreement to
indemnify and hold harmless certain persons as set forth therein. Pursuant to
the Registration Rights Agreement, the Company has agreed under certain
circumstances to indemnify the undersigned beneficial owner and selling
securityholder against certain liabilities.

      In accordance with the undersigned's obligation under the Registration
Rights Agreement to provide such information as may be required by law for
inclusion in the Shelf Registration Statement, the undersigned agrees to
promptly notify the Company of any inaccuracies or changes in the information
provided herein that may occur subsequent to the date hereof at any time while
the Shelf Registration Statement remains effective.

      All notices to the beneficial owner hereunder and pursuant to the
Registration Rights Agreement shall be made in writing to the undersigned at the
address set forth in Item 1(b) of this Notice and Questionnaire.

      By signing below, the undersigned acknowledges that it is the beneficial
owner of the Registrable Securities set forth herein, represents that the
information provided herein is accurate, and consents to the disclosure of the
information contained in this Notice and Questionnaire and the inclusion of such
information in the Shelf Registration Statement and the related prospectus. The
undersigned understands that such information will be relied upon by the Company
in connection with the preparation or amendment of the Shelf Registration
Statement and the related prospectus.

      Once this Notice and Questionnaire is executed by the undersigned
beneficial owner and received by the Company, the terms of this Notice and
Questionnaire, and the representations and warranties contained herein, shall be
binding on, shall inure to the benefit of, and shall be enforceable by the
respective successors, heirs, personal representatives, and assigns of the

<PAGE>

                                                                      APPENDIX A

Company and the undersigned beneficial owner. This Agreement shall be governed
in all respects by the laws of the state of New York.

<PAGE>

                                                                      APPENDIX A

      IN WITNESS WHEREOF the undersigned, by authority duly given, has caused
this Notice and Questionnaire to be executed and delivered either in person or
by its duly authorized agent.

                                        NAME OF BENEFICIAL OWNER:

                                        ________________________________________

                                                   (Please Print)

                                       Signature: ______________________________

                                       Date: ___________________________________<PAGE>

                                                                   EXHIBIT 10.21

                             SYNAPTICS INCORPORATED

                                  $100,000,000

              0.75% Convertible Senior Subordinated Notes due 2024

                               PURCHASE AGREEMENT

                                                                December 1, 2004

BEAR, STEARNS & CO. INC.
CREDIT SUISSE FIRST BOSTON LLC
c/o Bear, Stearns & Co. Inc.
383 Madison Avenue
New York, New York 10179

Ladies and Gentlemen:

         Synaptics Incorporated, a Delaware corporation (the "Company"), hereby
confirms its agreement with you (the "Initial Purchasers"), as set forth below.

         1.    The Transactions. Subject to the terms and conditions herein
contained, the Company proposes to issue and sell to the Initial Purchasers
$100,000,000 aggregate principal amount of its 0.75% Convertible Senior
Subordinated Notes due 2024 (the "Firm Notes"). In addition, the Company has
granted to the Initial Purchasers an option to purchase up to an additional
$25,000,000 aggregate principal amount of its 0.75% Convertible Senior
Subordinated Notes due 2024 (the "Optional Notes" and, together with the Firm
Notes, the "Notes"). The Notes shall be convertible into shares (the "Conversion
Shares") of common stock, par value $0.001 per share, of the Company (the
"Common Stock"), subject to and in accordance with the terms of the Notes. The
Notes will (i) have the terms and provisions which are described in the Offering
Memorandum (as defined below) under the heading "Description of Notes" and such
other terms as are customary and (ii) be issued pursuant to the provisions of
the Indenture (the "Indenture"), to be dated December 7, 2004, between the
Company and American Stock Transfer & Trust Company, as trustee (the "Trustee").
The Notes and the Conversion Shares are hereinafter referred to collectively as
the "Securities."

      The sale of the Notes to the Initial Purchasers (the "Offering") will be
made without registration of the Securities under the Securities Act of 1933, as
amended (together with the rules and regulations of the Securities and Exchange
Commission (the "Commission") promulgated thereunder, the "Securities Act"), in
reliance upon the exemption therefrom provided by Section 4(2) of the Securities
Act.

      In connection with the sale of the Notes, the Company has prepared a
preliminary offering memorandum dated November 30, 2004 (the "Preliminary
Offering Memorandum") and an offering memorandum dated the date hereof (the
"Offering

<PAGE>

Memorandum"), each setting forth information regarding the Company, the
Securities and the terms of the Offering and the transactions contemplated by
the Offering Documents (as defined below). The Preliminary Offering Memorandum
and the Offering Memorandum will incorporate by reference the Company's (i)
Annual Report on Form 10-K for the year ended June 30, 2004, (ii) Quarterly
Report on Form 10-Q for the quarter ended September 25, 2004, (iii) Proxy
Statement for the annual meeting of stockholders of the Company held on October
19, 2004, (iv) Current Reports on Form 8-K filed with the Commission on October
1, 2004 and October 13, 2004 (other than information in the documents that is
deemed not to be filed with the Commission) and (v) Registration Statements on
From 8-A filed on January 24, 2002 and August 16, 2002 (all such documents
listed in clauses (i) through (v) referred to herein as the "Incorporated
Documents"). Any references herein to the Preliminary Offering Memorandum or the
Offering Memorandum shall be deemed to include, in each case, all amendments and
supplements thereto and the Incorporated Documents and any amendments thereto.
The Company hereby confirms that it has authorized the use of the Preliminary
Offering Memorandum and the Offering Memorandum in connection with the offering
and initial resale of the Notes by the Initial Purchasers.

      The Company understands that the Initial Purchasers propose to make an
offering of the Notes only on the terms and in the manner set forth in the
Offering Memorandum and Sections 3, 4 and 10 hereof as soon as the Initial
Purchasers deem advisable after this Agreement has been executed and delivered,
to persons in the United States whom the Initial Purchasers reasonably believe
to be qualified institutional buyers ("QIBs") as defined in Rule 144A under the
Securities Act, as such rule may be amended from time to time ("Rule 144A"), in
transactions under Rule 144A.

      The Initial Purchasers and their direct and indirect transferees of the
Notes will be entitled to the benefits of the Registration Rights Agreement to
be dated as of December 7, 2004 among the parties hereto (the "Registration
Rights Agreement") pursuant to which the Company will agree, among other things,
to file (i) a registration statement (the "Registration Statement") on the
appropriate form with the Commission registering the Securities under the
Securities Act for resale and (ii) to use its reasonable best efforts to cause
the Registration Statement to be declared effective.

      This Agreement, the Securities, the Registration Rights Agreement and the
Indenture are herein referred to as the "Offering Documents."

      2.    Representations and Warranties of the Company. The Company
represents and warrants to and agrees with the Initial Purchasers that:

            (a)   The Preliminary Offering Memorandum as of its date does not,
      and the Offering Memorandum, as of its date, as of the Closing Date and as
      of the Additional Closing Date, if any (each as defined in Section 3
      hereof), does not and will not, and any supplement or amendment to them
      will not, contain any untrue statement of a material fact or omit to state
      a material fact necessary in order to make the statements therein not
      misleading, except that the representations and warranties set forth in
      this Section 2(a) do not apply to

                                       2
<PAGE>

      statements or omissions that are made in reliance upon and in conformity
      with information relating to the Initial Purchasers furnished to the
      Company in writing by or on behalf of the Initial Purchasers expressly for
      use in the Preliminary Offering Memorandum or the Offering Memorandum or
      any amendment or supplement thereto.

            (b)   The Preliminary Offering Memorandum and the Offering
      Memorandum with respect to the Notes have been or will be prepared by the
      Company for use by the Initial Purchasers in connection with the Offering.
      No order or decree preventing the use of the Preliminary Offering
      Memorandum or the Offering Memorandum or any amendment or supplement
      thereto, or any order asserting that the transactions contemplated by this
      Agreement are subject to the registration requirements of the Securities
      Act, has been issued and no proceeding for that purpose has commenced or
      is pending or, to the knowledge of the Company, is contemplated.

            (c)   Subsequent to the respective dates as of which information is
      given in the Offering Memorandum (or, if the Offering Memorandum is not in
      existence, the most recent Preliminary Offering Memorandum), except as
      disclosed in the Offering Memorandum (or, if the Offering Memorandum is
      not in existence, the most recent Preliminary Offering Memorandum), the
      Company has not declared, paid or made any dividends or other
      distributions of any kind on or in respect of its capital stock and there
      has been no material adverse change or any development involving a
      prospective material adverse change, whether or not arising from
      transactions in the ordinary course of business, in (i) the business,
      condition (financial or otherwise), results of operations, stockholders'
      equity or properties of the Company and each subsidiary of the Company
      listed on Exhibit A hereto (collectively, the "Subsidiaries";
      individually, a "Subsidiary"), taken as a whole; (ii) the long-term debt
      or capital stock of the Company and its Subsidiaries taken as a whole; or
      (iii) the ability of the Company to consummate the Offering or any of the
      other transactions contemplated by the Offering Documents. Since the date
      of the latest balance sheet included or incorporated by reference in the
      Offering Memorandum (or, if the Offering Memorandum is not in existence,
      the most recent Preliminary Offering Memorandum), neither the Company nor
      any Subsidiary has incurred or undertaken any liabilities or obligations,
      whether direct or indirect, liquidated or contingent, matured or
      unmatured, or entered into any transactions, including any acquisition or
      disposition of any business or asset, which are material to the Company
      and its Subsidiaries, taken as a whole, except for liabilities,
      obligations and transactions which are disclosed in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the most
      recent Preliminary Offering Memorandum).

            (d)   The authorized, issued and outstanding capital stock of the
      Company is as set forth in the Offering Memorandum (or, if the Offering
      Memorandum is not in existence, the most recent Preliminary Offering
      Memorandum) under the caption "Capitalization" and, after giving effect to
      the Offering, will be as set forth in the column headed "As Adjusted"
      under the

                                       3
<PAGE>

      caption "Capitalization." All of the issued and outstanding shares of
      capital stock of the Company are fully paid and non-assessable and have
      been duly and validly authorized and issued, in compliance with all
      applicable state, federal and foreign securities laws and not in violation
      of or subject to any preemptive or similar right that does or will entitle
      any person, upon the issuance or sale of any security, to acquire from the
      Company or any Subsidiary any Common Stock or other security of the
      Company or any Subsidiary or any security convertible into, or exercisable
      or exchangeable for, Common Stock or any other such security (any
      "Relevant Security").

            (e)   The Company has authorized and has reserved, and covenants to
      continue to reserve, free of any preemptive or similar rights, a
      sufficient number of authorized but unissued shares of Common Stock, to
      satisfy the conversion rights of the Notes and issue the Conversion
      Shares. The Conversion Shares have been duly authorized for issuance upon
      conversion of the Notes, and upon conversion of the Notes in accordance
      with their terms and the Indenture will be issued free of statutory and
      contractual preemptive rights and are sufficient in number to meet the
      current conversion requirements, and the Conversion Shares, when so
      issued, will be duly and validly issued and fully paid and non-assessable,
      will have been issued in compliance with all applicable state, federal and
      foreign securities laws, will not have been issued in violation of or
      subject to any preemptive or similar right existing on the date hereof
      that does or will entitle any person to acquire any Relevant Security from
      the Company or any Subsidiary upon issuance or sale of the Notes or the
      Conversion Shares, and assuming the Registration Statement is effective,
      will not be subject to any restriction upon the voting or transfer thereof
      pursuant to applicable law or the Company's certificate of incorporation,
      bylaws or governing documents or any agreement to which the Company or any
      of its subsidiaries is a party or by which any of them may be bound.

            (f)   The Common Stock (including the Conversion Shares) conforms in
      all material respects to the descriptions thereof contained in the
      Offering Memorandum (or, if the Offering Memorandum is not in existence,
      the most recent Preliminary Offering Memorandum). Except as disclosed in
      the Offering Memorandum (or, if the Offering Memorandum is not in
      existence, the most recent Preliminary Offering Memorandum), neither the
      Company nor any Subsidiary has outstanding warrants, options to purchase,
      or any preemptive rights or other rights to subscribe for or to purchase,
      or any contracts or commitments to issue or sell, any Relevant Security.
      All corporate action required to be taken by the Company for the issuance
      and delivery of the Conversion Shares has been duly and validly taken.
      Except as disclosed in the Offering Memorandum (or, if the Offering
      Memorandum is not in existence, the Preliminary Offering Memorandum),
      there are no outstanding subscriptions, rights, warrants, options, calls,
      convertible securities, commitments of sale or rights related to or
      entitling any person to purchase or otherwise to acquire any shares of, or
      any security convertible into or exchangeable or exercisable for, the
      capital stock of, or other ownership interest in, the Company or the
      Subsidiaries.

                                       4
<PAGE>

            (g)   The Subsidiaries are the only subsidiaries of the Company
      within the meaning of Rule 405 under the Securities Act. Except for the
      Subsidiaries and Foveon, Inc., the Company holds no ownership or other
      interest, nominal or beneficial, direct or indirect, in any corporation,
      partnership, joint venture or other business entity. All of the issued
      shares of capital stock of or other ownership interests in each Subsidiary
      have been duly and validly authorized and issued and are fully paid and
      non-assessable and are owned directly or indirectly by the Company. Except
      as described in the Preliminary Offering Memorandum and the Offering
      Memorandum, all of the issued shares of capital stock of or other
      ownership interests in each Subsidiary are free and clear of any lien,
      charge, mortgage, pledge, security interest, claim, equity, trust or other
      encumbrance, preferential arrangement, defect or restriction of any kind
      whatsoever (any "Lien").

            (h)   Each of the Company and the Subsidiaries has been duly
      organized and validly exists as a corporation, partnership, limited
      liability company or, in the case of Synaptics Hong Kong Limited, a
      company, in good standing under the laws of its jurisdiction of
      organization. Each of the Company and the Subsidiaries has all requisite
      power and authority to carry on its business as it is currently being
      conducted and as described in the Offering Memorandum (or, if the Offering
      Memorandum is not in existence, the most recent Preliminary Offering
      Memorandum), and to own, lease and operate its respective properties. Each
      of the Company and the Subsidiaries is duly qualified to do business and
      is in good standing as a foreign corporation, partnership, limited
      liability company, or, in the case of Synaptics Hong Kong Limited, a
      company, in each jurisdiction in which the character or location of its
      properties (owned, leased or licensed) or the nature or conduct of its
      business makes such qualification necessary, except for those failures to
      be so qualified or in good standing which (individually and in the
      aggregate) could not reasonably be expected to have a material adverse
      effect on (i) the business, condition (financial or otherwise), results of
      operations, stockholders' equity or properties of the Company and the
      Subsidiaries, taken as a whole; (ii) the long-term debt or capital stock
      of the Company or any Subsidiary; or (iii) the Offering or consummation of
      any of the other transactions contemplated by the Offering Documents (any
      such effect being a "Material Adverse Effect").

            (i)   The Company has the required corporate power and authority to
      execute, deliver and perform its obligations under the Notes. The Notes
      have been duly and validly authorized by the Company for issuance and,
      when executed by the Company and authenticated by the Trustee in
      accordance with the provisions of the Indenture and when delivered to and
      paid for by the Initial Purchasers in accordance with the terms hereof,
      will have been duly executed, issued and delivered and will constitute
      valid and legally binding obligations of the Company, entitled to the
      benefits of the Indenture and enforceable against the Company in
      accordance with their terms except that the enforcement thereof may be
      limited by (i) bankruptcy, insolvency, reorganization, moratorium or other
      similar laws now or hereafter in effect relating to or affecting

                                       5
<PAGE>

      creditors' rights generally and (ii) general principles of equity
      (regardless of whether such enforcement is considered in a proceeding at
      law or in equity) ((i) and (ii) collectively, the "Enforceability
      Exceptions"). At the Closing Date, the Notes will be in the form
      contemplated by the Indenture.

            (j)   The Company has the requisite corporate power and authority to
      execute, deliver and perform its obligations under the Indenture. The
      Indenture has been duly and validly authorized by the Company and meets
      the requirements for qualification under the Trust Indenture Act of 1939,
      as amended (the "TIA"), and, when executed and delivered by the Company
      (assuming the due authorization, execution and delivery by the Trustee),
      will constitute a valid and legally binding agreement of the Company,
      enforceable against the Company in accordance with its terms except that
      the enforcement thereof may be limited by the Enforceability Exceptions.

            (k)   The Company has the requisite corporate power and authority to
      execute, deliver and perform its obligations under the Registration Rights
      Agreement. The Registration Rights Agreement has been duly and validly
      authorized by the Company and when executed and delivered by the Company
      (assuming the due authorization, execution and delivery by the Initial
      Purchasers), will constitute a valid and legally binding agreement of the
      Company, enforceable against the Company in accordance with its terms
      except that the enforcement thereof may be limited by the Enforceability
      Exceptions.

            (l)   The Company has the requisite corporate power and authority to
      execute, deliver and perform its obligations under this Agreement. This
      Agreement has been duly and validly authorized, executed, and delivered by
      the Company. The Securities, the Indenture and the Registration Rights
      Agreement conform in all material respects to the descriptions thereof in
      the Offering Memorandum (or, if the Offering Memorandum is not in
      existence, the most recent Preliminary Offering Memorandum).

            (m)   There exists as of the date hereof (after giving effect to the
      transactions contemplated by each of the Offering Documents) no event or
      condition that would constitute a default or an event of default (in each
      case as defined in each of the Offering Documents) under any of the
      Offering Documents that would result in a Material Adverse Effect or
      materially adversely affect the ability of the Company to consummate the
      Offering and the other transactions contemplated by the Offering
      Documents.

            (n)   The execution, delivery, and performance of this Agreement and
      consummation of the transactions contemplated by the Offering Documents do
      not and will not (i) conflict with, require consent under or result in a
      breach of any of the terms and provisions of, or constitute a default (or
      an event which with notice or lapse of time, or both, would constitute a
      default) under, or result in the creation or imposition of any Lien upon
      any property or assets of the Company or any Subsidiary pursuant to, any
      indenture, mortgage, deed of trust,

                                       6
<PAGE>

      loan agreement or other agreement, instrument, franchise, license or
      permit to which the Company or any Subsidiary is a party or by which the
      Company or any Subsidiary or their respective properties, operations or
      assets may be bound other than pursuant to the terms of the Offering
      Documents or (ii) violate or conflict with any provision of the
      certificate or articles of incorporation, bylaws, certificate of
      formation, limited liability company agreement, partnership agreement or
      other organizational documents of the Company or any Subsidiary, or (iii)
      violate or conflict with any law, rule, regulation, ordinance, directive,
      judgment, decree or order of any judicial, regulatory or other legal or
      governmental agency or body, domestic or foreign, except (in the case of
      clauses (i) and (iii) above) as could not reasonably be expected to have a
      Material Adverse Effect.

            (o)   Each of the Company and the Subsidiaries has all necessary
      material consents, approvals, authorizations, orders, registrations,
      qualifications, licenses, filings and permits of, with and from all
      judicial, regulatory and other legal or governmental agencies and bodies
      and all third parties, foreign and domestic (collectively, the
      "Consents"), to own, lease and operate its properties and conduct its
      business as it is now being conducted and as disclosed in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the most
      recent Preliminary Offering Memorandum), and each such Consent is valid
      and in full force and effect, and neither the Company nor any Subsidiary
      has received notice of any investigation or proceedings which results in
      or, if decided adversely to the Company or any Subsidiary, could
      reasonably be expected to result in, the revocation of, or imposition of a
      materially burdensome restriction on, any Consent. Each of the Company and
      the Subsidiaries is in compliance with all applicable laws, rules,
      regulations, ordinances, directives, judgments, decrees and orders,
      foreign and domestic (including, without limitation, the Sarbanes-Oxley
      Act of 2002 and the rules promulgated by the Commission thereunder),
      except where failure to be in compliance could not reasonably be expected
      to have a Material Adverse Effect. No Consent contains a materially
      burdensome restriction not adequately disclosed in the Offering Memorandum
      (or, if the Offering Memorandum is not in existence, the most recent
      Preliminary Offering Memorandum).

            (p)   No Consent of, with or from any judicial, regulatory or other
      legal or governmental agency or body or any third party, foreign or
      domestic, is required for the execution, delivery and performance of this
      Agreement or consummation of the Offering and the other transactions
      contemplated by the Offering Documents, including the issuance, sale and
      delivery of the Notes (and the issuance of the Conversion Shares upon
      conversion of the Notes), except such Consents as may be required under
      state securities or blue sky laws and that the Commission must declare the
      Registration Statement effective pursuant to the Registration Rights
      Agreement.

            (q)   There is no judicial, regulatory, arbitral or other legal or
      governmental proceeding or other litigation or arbitration, domestic or
      foreign,

                                       7
<PAGE>

      pending to which the Company or any Subsidiary is a party or of which any
      property, operations or assets of the Company or any Subsidiary is the
      subject which, individually or in the aggregate, if determined adversely
      to the Company or any Subsidiary, could reasonably be expected to have a
      Material Adverse Effect; to the best of the Company's knowledge, no such
      proceeding, litigation or arbitration is threatened or contemplated
      against the Company or any Subsidiary; and the defense of all such
      proceedings, litigation and arbitration against or involving the Company
      or any Subsidiary could not reasonably be expected to have a Material
      Adverse Effect.

            (r)   The financial statements and pro forma data, including the
      notes thereto, and the supporting schedules included in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the most
      recent Preliminary Offering Memorandum) present fairly in all material
      respects the financial position as of the dates indicated and the cash
      flows and results of operations for the periods specified of the Company
      and its consolidated subsidiaries for which financial statements are
      included in the Offering Memorandum (or, if the Offering Memorandum is not
      in existence, the most recent Preliminary Offering Memorandum); said
      financial statements have been prepared in conformity with United States
      generally accepted accounting principles applied on a consistent basis
      throughout the periods involved except as disclosed in the Offering
      Memorandum; and the supporting schedules included in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the most
      recent Preliminary Offering Memorandum) present fairly in all material
      respects the information required to be stated therein. No other financial
      statements or supporting schedules are required to be included in the
      Offering Memorandum (or, if the Offering Memorandum is not in existence,
      the most recent Preliminary Offering Memorandum) if the Offering
      Memorandum were included in a registration statement filed pursuant to the
      Securities Act. The other financial and statistical information included
      in the Offering Memorandum (or, if the Offering Memorandum is not in
      existence, the most recent Preliminary Offering Memorandum) presents
      fairly in all material respects the information included therein and,
      unless otherwise disclosed, has been prepared on a basis consistent with
      that of the financial statements that are included in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the most
      recent Preliminary Offering Memorandum) and the books and records of the
      respective entities presented therein and, to the extent such information
      is a range, projection or estimate, is based on the good faith belief and
      estimates of the Company. The financial information included in the
      Incorporated Documents, including the information under Item 1
      ("Business"), Item 7 ("Management's Discussion and Analysis of Financial
      Condition and Results of Operations") and Item 7A ("Quantitative and
      Qualitative Disclosures About Market Risk") in the Form 10-K for the year
      ended June 30, 2004 has been derived from the Company's consolidated
      financial statements included in the Incorporated Documents or from the
      Company's accounting books and records generally.

                                       8
<PAGE>

            (s)   KPMG LLP and Ernst & Young LLP, which have examined certain of
      such financial statements as set forth in their reports included in the
      Offering Memorandum (or, if the Offering Memorandum is not in existence,
      the most recent Preliminary Offering Memorandum), are independent
      registered public accounting firms as contemplated by the Securities Act
      and the Securities Exchange Act of 1934, as amended (together with the
      rules and regulations of the Commission promulgated thereunder, the
      "Exchange Act").

            (t)   The Offering Memorandum (or, if the Offering Memorandum is not
      in existence, the most recent Preliminary Offering Memorandum) contains,
      if any, all pro forma and as adjusted financial information and statements
      which are required to be included or incorporated by reference in
      accordance with Regulation S-X in the Offering Memorandum if the Offering
      Memorandum were included in a registration statement filed pursuant to the
      Securities Act. The pro forma and as adjusted financial information and
      statements have been properly compiled and prepared in accordance with the
      applicable requirements of the Securities Act and the Exchange Act and
      includes all adjustments necessary to present fairly in accordance with
      United States generally accepted accounting principles the pro forma and
      as adjusted financial position of the respective entity or entities
      presented therein at the respective dates indicated and their cash flows
      and the results of operations for the respective periods specified.

            (u)   The Company is subject to the reporting requirements of
      Section 13 or 15(d) of the Exchange Act and files reports with the
      Commission on the EDGAR System. The Common Stock is registered pursuant to
      Section 12(g) of the Exchange Act and the outstanding shares of Common
      Stock are listed for quotation on the Nasdaq National Market, and the
      Company has taken no action designed to, or likely to have the effect of,
      terminating the registration of the Common Stock under the Exchange Act or
      de-listing the Common Stock from the Nasdaq National Market, nor has the
      Company received any notification that the Commission or the Nasdaq
      National Market is contemplating terminating such registration or listing.

            (v)   The Company has filed in a timely manner each document or
      report required to be filed by it pursuant to the Exchange Act including,
      without limitation, the Incorporated Documents; each such document or
      report (including any financial statements) and any amendment thereto at
      the time it was filed conformed to the requirements of the Exchange Act
      and the Securities Act in all material respects; and none of such
      documents or reports contained (or, when read together with the other
      information in the Offering Memorandum, do contain) an untrue statement of
      any material fact or omitted (or, when read together with the other
      information in the Offering Memorandum, do omit) to state any material
      fact required to be stated therein or necessary to make the statements
      therein not misleading as the case may be, and at all times up to and
      including the Closing Date (and if any Optional Notes are purchased, the
      Additional Closing Date), will not contain an untrue statement of a
      material fact

                                       9
<PAGE>

      or omit to state a material fact required to be stated therein or
      necessary in order to make the statements therein in the light of the
      circumstances under which they were made not misleading.

            (w)   The Company maintains a system of internal accounting and
      other controls sufficient to provide reasonable assurances that (i)
      transactions are executed in accordance with management's general or
      specific authorizations, (ii) transactions are recorded as necessary to
      permit preparation of financial statements in conformity with United
      States generally accepted accounting principles and to maintain
      accountability for assets, (iii) access to assets is permitted only in
      accordance with management's general or specific authorization, and (iv)
      the recorded accounting for assets is compared with existing assets at
      reasonable intervals and appropriate action is taken with respect to any
      differences.

            (x)   Neither the Company nor any of its affiliates (within the
      meaning of Rule 144 under the Securities Act) has taken, directly or
      indirectly, any action that constitutes or is designed to cause or result
      in, or which could reasonably be expected to constitute, cause or result
      in, the stabilization or manipulation of the price of any security to
      facilitate the sale or resale of the Securities.

            (y)   None of the Company or any of the Subsidiaries or any of their
      respective affiliates (as defined in Rule 501(b) of Regulation D under the
      Securities Act) directly, or through any agent, (i) sold, offered for
      sale, solicited offers to buy or otherwise negotiated in respect of any
      "security" (as defined in the Securities Act) which is or could be
      integrated with the sale of the Securities in a manner that would require
      the registration under the Securities Act of the Securities or (ii)
      engaged in any form of general solicitation or general advertising (as
      those terms are used in Regulation D under the Securities Act) in
      connection with the offering of the Securities or in any manner involving
      a public offering within the meaning of Section 4(2) of the Securities
      Act. Assuming the accuracy of the Initial Purchasers' representations and
      warranties set forth in Section 10 hereof, the offer and sale of the Notes
      to the Initial Purchasers in the manner contemplated by this Agreement and
      the Offering Memorandum does not require registration under the Securities
      Act and the Indenture does not require qualification under the TIA.

            (z)   Except as described in the Offering Memorandum (or, if the
      Offering Memorandum is not in existence, the most recent Preliminary
      Offering Memorandum), no holder of any Relevant Security has any rights to
      require registration of any Relevant Security as part or on account of, or
      otherwise in connection with, the Offering and any of the other
      transactions contemplated by the Offering Documents, and any such rights
      so disclosed have been effectively waived by the holders thereof, and any
      such waivers remain in full force and effect.

                                       10
<PAGE>

            (aa)  Each of the Company and the Subsidiaries is not now and, after
      sale of the Notes, as contemplated hereunder and application of the net
      proceeds of such sale as described in the Offering Memorandum under the
      caption "Use of Proceeds," will not be an "investment company" or be
      controlled by an "investment company" within the meaning of the Investment
      Company Act of 1940, as amended.

            (bb)  No relationship, direct or indirect, exists between or among
      the Company or any affiliate of the Company, on the one hand, and any
      director, officer, stockholder, customer or supplier of the Company or any
      affiliate of the Company, on the other hand, which is required by the
      Exchange Act to be described in the Company's annual and/or quarterly
      reports on Form 10-K and 10-Q, as applicable, which is not so described as
      required in such reports. There are no outstanding loans, advances (except
      normal advances for business expenses in the ordinary course of business)
      or guarantees of indebtedness by the Company to or for the benefit of any
      of the officers or directors of the Company or any of their respective
      family members. The Company has not, in violation of the Sarbanes-Oxley
      Act, directly or indirectly, including through a Subsidiary, extended or
      maintained credit, arranged for the extension of credit, or renewed an
      extension of credit, in the form of a personal loan to or for any director
      or executive officer of the Company.

            (cc)  Each of the Company and the Subsidiaries owns or leases all
      such properties as are necessary to the conduct of its business as
      presently operated and as proposed to be operated as described in the
      Offering Memorandum (or, if the Offering Memorandum is not in existence,
      the Preliminary Offering Memorandum). The Company and the Subsidiaries
      have good and marketable title in fee simple to all real property and good
      and marketable title to all personal property owned by them, in each case
      free and clear of all Liens except such as are described in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the
      Preliminary Offering Memorandum) or such as do not (individually or in the
      aggregate) materially affect the value of such property or interfere with
      the use made or proposed to be made of such property by the Company and
      the Subsidiaries; and any real property and buildings held under lease or
      sublease by the Company and the Subsidiaries are held by them under valid,
      subsisting and enforceable leases with such exceptions as are not material
      to, and do not interfere with, the use made and proposed to be made of
      such property and buildings by the Company and the Subsidiaries. Neither
      the Company nor any Subsidiary has received any notice of any claim
      adverse to its ownership of any real or personal property or of any claim
      against the continued possession of any real property, whether owned or
      held under lease or sublease by the Company or any Subsidiary.

            (dd)  Each of the Company and the Subsidiaries owns or has the right
      to all Intellectual Property Rights necessary for the conduct of its
      respective business as being conducted and as described in the Offering
      Memorandum (or, if the Offering Memorandum is not in existence, the
      Preliminary Offering

                                       11
<PAGE>

      Memorandum). Each of the Company and the Subsidiaries have no reason to
      believe that the conduct of their respective businesses does or will
      conflict with, and have not received any notice of any claim of conflict
      with, any such rights of others, except any such conflict that would not
      have a Material Adverse Effect. For purposes hereof, "Intellectual
      Property Rights" means any or all of the following and all rights in: (i)
      all United States and foreign patents and utility models and applications
      therefor and all reissues, divisions, re-examinations, renewals,
      extensions, provisionals, continuations and continuations-in-part thereof,
      and equivalent or similar rights anywhere in the world in inventions and
      discoveries including without limitation invention disclosures; (ii) all
      trade secrets and other rights in know-how and confidential or proprietary
      information; (iii) all copyrights, copyrights registrations and
      applications therefor and all other copyright rights corresponding thereto
      throughout the world; (iv) all industrial designs and any registrations
      and applications therefor throughout the world; (v) all rights in domain
      names and applications and registrations therefore; (vi) all trade names,
      logos, trade dress, common law trademarks and service marks, trademark and
      service mark registrations and applications therefor and all goodwill
      associated therewith throughout the world; and (vii) any similar,
      corresponding or equivalent rights to any of the foregoing anywhere in the
      world. To the best of the Company's knowledge, all material technical
      information developed by and belonging to the Company or any Subsidiary
      which has not been patented has been kept confidential. All of the pending
      applications for any Intellectual Property Rights owned by the Company or
      any Subsidiary have been duly filed, prosecution for applications has been
      attended to and all maintenance and related fees have been paid. None of
      the Company's or any Subsidiary's software is, in whole or in part,
      subject to the provisions of any open source or quasi-open source or
      similar license agreement that would require the Company or a Subsidiary
      to make source code available to third parties or to publish source code.
      Neither the Company nor any Subsidiary has made any submission or
      suggestion to, and is not subject to any agreement with, standards bodies
      or other entities that would obligate the Company or the Subsidiary to
      grant licenses to or otherwise impair its control of its Intellectual
      Property Rights. Except as described in the Preliminary Offering
      Memorandum and the Offering Memorandum, neither the Company nor any
      Subsidiary has granted or assigned to any other person or entity any right
      to manufacture, have manufactured, assemble or sell the current products
      and services of the Company and the Subsidiaries or those products and
      services described in the Offering Memorandum (or, if the Offering
      Memorandum is not in existence, the Preliminary Offering Memorandum).
      There is no pending or, to the Company's knowledge, threatened action,
      suit, proceeding or claim by others challenging the Company's or any
      Subsidiary's rights in or to any Intellectual Property, and the Company is
      unaware of any facts which would form a reasonable basis for any such
      claim; and there is no pending or, to the Company's knowledge, threatened
      action, suit, proceeding or claim by others that the Company or any
      Subsidiary infringes or otherwise violates any patent, trademark,
      copyright, trade secret or other proprietary rights of others, and the
      Company is unaware of any other fact which would form a

                                       12
<PAGE>

      reasonable basis for any such claim, except as could not reasonably be
      expected to have a Material Adverse Effect . The Company and each
      Subsidiary has obtained all approvals necessary for exporting the
      Company's or Subsidiary's products outside the United States or in
      accordance with all applicable United States export control regulations,
      and importing the products into any country in which the products are now
      sold or licensed for use, and all such export and import approvals in the
      United States and throughout the world are valid, current, outstanding and
      in full force and effect, except for approvals the absence of which could
      not reasonably be expected to have a Material Adverse Effect.

            (ee)  The Company and the Subsidiaries maintain insurance in such
      amounts and covering such risks as the Company reasonably considers
      adequate for the conduct of its business and the value of its properties
      and as is, to the Company's knowledge, customary for companies engaged in
      similar businesses in similar industries, all of which insurance is in
      full force and effect, except where the failure to maintain such insurance
      could not reasonably be expected to have a Material Adverse Effect. There
      are no material claims by the Company or any Subsidiary under any such
      policy or instrument as to which any insurance company is denying
      liability or defending under a reservation of rights clause. The Company
      reasonably believes that it will be able to renew its existing insurance
      as and when such coverage expires or will be able to obtain replacement
      insurance adequate for the conduct of the business and the value of its
      properties at a cost that could not reasonably be expected to have a
      Material Adverse Effect.

            (ff)  The Company has in effect insurance covering the Company, its
      directors and officers for liabilities or losses arising in connection
      with this Offering, including, without limitation, liabilities or losses
      arising under the Securities Act, the Exchange Act, and applicable foreign
      securities laws.

            (gg)  Each of the Company and the Subsidiaries has accurately
      prepared in all material respects and timely filed all federal, state,
      foreign and other tax returns that are required to be filed by it and has
      paid or made provision for the payment of all taxes, assessments,
      governmental or other similar charges, including without limitation, all
      sales and use taxes and all taxes which the Company or any Subsidiary is
      obligated to withhold from amounts owing to employees, creditors and third
      parties, with respect to the periods covered by such tax returns (whether
      or not such amounts are shown as due on any tax return), except for such
      failures that could not reasonably be expected to have a Material Adverse
      Effect. No deficiency assessment with respect to a proposed adjustment of
      the Company's or any Subsidiary' federal, state, local or foreign taxes is
      pending or, to the best of the Company's knowledge, threatened. The
      accruals and reserves on the books and records of the Company and the
      Subsidiaries in respect of tax liabilities for any taxable period not
      finally determined are adequate to meet any assessments and related
      liabilities for any such period and, since June 30, 2004, the Company and
      the Subsidiaries have not incurred any liability for taxes other than in
      the ordinary course of its business. There is no tax Lien,

                                       13
<PAGE>

      whether imposed by any federal, state, foreign or other taxing authority,
      outstanding against the assets, properties or business of the Company or
      any Subsidiary, except for Liens that could not reasonably be expected to
      have a Material Adverse Effect.

            (hh)  No labor disturbance by the employees of the Company or any
      Subsidiary exists or, to the best of the Company's knowledge, is imminent,
      which could reasonably be expected to have a Material Adverse Effect.

            (ii)  No "prohibited transaction" (as defined in either Section 406
      of the Employee Retirement Income Security Act of 1974, as amended,
      including the regulations and published interpretations thereunder
      ("ERISA") or Section 4975 of the Internal Revenue Code of 1986, as amended
      from time to time (the "Code")), "accumulated funding deficiency" (as
      defined in Section 302 of ERISA) or other event of the kind described in
      Section 4043(b) of ERISA (other than events with respect to which the
      30-day notice requirement under Section 4043 of ERISA has been waived) has
      occurred with respect to any employee benefit plan for which the Company
      or any Subsidiary would have any material liability; each employee benefit
      plan for which the Company or any Subsidiary would have any liability is
      in compliance in all material respects with applicable law, including
      (without limitation) ERISA and the Code; the Company has not incurred and
      does not expect to incur liability under Title IV of ERISA with respect to
      the termination of, or withdrawal from, any "pension plan"; and each plan
      for which the Company would have any liability that is intended to be
      qualified under Section 401(a) of the Code is so qualified and nothing has
      occurred, whether by action or by failure to act, which could reasonably
      be expected to cause the loss of such qualification.

            (jj)  There has been no storage, generation, transportation,
      handling, treatment, disposal, discharge, emission or other release of any
      kind of toxic or other wastes or other hazardous substances by, due to, or
      caused by the Company or any Subsidiary (or, to the Company's knowledge,
      any other entity for whose acts or omissions the Company is or may be
      liable) upon any other property now or previously owned or leased by the
      Company or any Subsidiary, or upon any other property, which would be a
      violation of or give rise to any liability under any applicable law, rule,
      regulation, order, judgment, decree or permit relating to pollution or
      protection of human health and the environment ("Environmental Law").
      There has been no disposal, discharge, emission or other release of any
      kind onto such property or into the environment surrounding such property
      of any toxic or other wastes or other hazardous substances with respect to
      which the Company or any Subsidiary has knowledge. Neither the Company nor
      any Subsidiary has agreed to assume, undertake or provide indemnification
      for any liability of any other person under any Environmental Law,
      including any obligation for cleanup or remedial action. There is no
      pending or, to the Company's knowledge, threatened administrative,
      regulatory or judicial action, claim or notice of noncompliance or
      violation, investigation or proceedings relating to any Environmental Law
      against the Company or any Subsidiary.

                                       14
<PAGE>

            (kk)  Neither the Company nor any Subsidiary nor, to the Company's
      knowledge, any of its employees or agents has at any time during the last
      five years (i) made any unlawful contribution to any candidate for foreign
      office, or failed to disclose fully any contribution in violation of law,
      or (ii) made any payment to any federal or state governmental officer or
      official, or other person charged with similar public or quasi-public
      duties, other than payments required or permitted by the laws of the
      United States or any jurisdiction thereof.

            (ll)  Neither the Company nor any Subsidiary (i) is in violation of
      its certificate or articles of incorporation, bylaws, certificate of
      formation, limited liability company agreement, partnership agreement or
      other organizational documents, (ii) is in default under, and no event has
      occurred which, with notice or lapse of time or both, would constitute a
      default under or result in the creation or imposition of any Lien upon any
      of its property or assets pursuant to, any indenture, mortgage, deed of
      trust, loan agreement or other agreement or instrument to which it is a
      party or by which it is bound or to which any of its property or assets is
      subject or (iii) is in violation in any respect of any law, rule,
      regulation, ordinance, directive, judgment, decree or order of any
      judicial, regulatory or other legal or governmental agency or body,
      foreign or domestic, except violations or defaults that could not
      (individually or in the aggregate) reasonably be expected to have a
      Material Adverse Effect and except (in the case of clause (ii) alone) for
      any Lien disclosed in the Offering Memorandum (or, if the Offering
      Memorandum is not in existence, the most recent Preliminary Offering
      Memorandum).

            (mm)  Except as described in the Offering Memorandum (or, if the
      Offering Memorandum is not in existence, the most recent Preliminary
      Offering Memorandum), none of the Company or any of the Subsidiaries is in
      default under any of the contracts described in the Offering Memorandum
      (or, if the Offering Memorandum is not in existence, the most recent
      Preliminary Offering Memorandum), has received a notice or claim of any
      such default or has knowledge of any breach of such contracts by the other
      party or parties thereto, except such defaults or breaches as would not,
      individually or in the aggregate, have a Material Adverse Effect.

            (nn)  None of the Company or the Subsidiaries has taken or will take
      any action that would cause this Agreement or the issuance or sale of the
      Securities to violate Regulation T, U or X of the Board of Governors of
      the Federal Reserve System, in each case as in effect, or as the same may
      hereafter be in effect, on the Closing Date (and, if any Optional Notes
      are purchased, as of the Additional Closing Date).

            (oo)  (i) Immediately after the consummation of the Offering, the
      fair value and present fair saleable value of the assets of the Company
      and the Subsidiaries will exceed the sum of their stated liabilities and
      identified contingent liabilities; and (ii) the Company and the
      Subsidiaries are not, nor will they be, after giving effect to the
      execution, delivery and performance of the

                                       15
<PAGE>

      Offering Documents and the consummation of the transactions contemplated
      thereby, (a) left with unreasonably small capital with which to carry on
      their businesses as is proposed to be conducted, (b) unable to pay their
      debts (contingent or otherwise) as they mature or (c) insolvent.

            (pp)  No securities of the Company or any of the Subsidiaries are of
      the same class (within the meaning of Rule 144A under the Securities Act)
      as the Notes.

            (qq)  The statistical, industry-related and market-related data
      included in the Offering Memorandum (or, if the Offering Memorandum is not
      in existence, the most recent Preliminary Offering Memorandum) are based
      on or derived from sources which the Company reasonably and in good faith
      believes are reliable, and such data agree with the sources from which
      they are derived.

            (rr)  The Company has not distributed and, prior to the later to
      occur of the (i) Closing Date (and, if any Optional Notes are purchased,
      the Additional Closing Date) and (ii) completion of the distribution of
      the Notes, will not distribute any offering material in connection with
      the offering and sale of the Notes other than the Preliminary Offering
      Memorandum and the Offering Memorandum.

            (ss)  The certificates for the shares of Common Stock (including the
      Conversion Shares) conform to the requirements of the Nasdaq National
      Market and the Delaware General Corporation Law.

            (tt)  The Company is in material compliance with applicable
      provisions of the Sarbanes-Oxley Act that are effective and is actively
      taking steps to ensure that it will be in compliance with other applicable
      provisions of the Sarbanes-Oxley Act upon the effectiveness of such
      provisions.

            (uu)  The Company has implemented the "disclosure controls and
      procedures" (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange
      Act) required in order for the Chief Executive Officer and Chief Financial
      Officer of the Company to engage in the review and evaluation process
      mandated by the Exchange Act. The Company's "disclosure controls and
      procedures" are reasonably designed to ensure that all information (both
      financial and non-financial) required to be disclosed by the Company in
      the reports that it files or submits under the Exchange Act is recorded,
      processed, summarized and reported within the specified time periods, and
      that all such information is accumulated and communicated to the Company's
      management as appropriate to allow timely decisions regarding required
      disclosure and to make the certifications of the Chief Executive Officer
      and Chief Financial Officer of the Company required under the Exchange Act
      with respect to such reports.

            (vv)  The section entitled "Management's Discussion and Analysis of
      Financial Condition and Results of Operation - Critical Accounting

                                       16
<PAGE>

      Policies and Estimates" in the Incorporated Documents accurately and fully
      describes (i) accounting policies which the Company believes are the most
      important in the portrayal of the financial condition and results of
      operations of the Company and its consolidated subsidiaries and which
      require management's most difficult, subjective or complex judgments
      ("critical accounting policies"); (ii) judgments and uncertainties
      affecting the application of critical accounting policies; and (iii)
      explanation of the likelihood that materially different amounts would be
      reported under different conditions or using different assumptions.

            (ww)  The Company's senior management and audit committee have
      reviewed and agreed with the selection, application and disclosure of
      critical accounting policies and have consulted with the Company's
      independent accountants with regard to such disclosure.

            (xx)  The section entitled "Management's Discussion and Analysis of
      Financial Condition and Results of Operations - Liquidity and Capital
      Resources" in the Incorporated Documents fully and fairly describes in all
      material respects (i) all material trends, demands, commitments, events,
      uncertainties and risks, and the potential effects thereof, that the
      Company believes would materially affect liquidity and are reasonably
      likely to occur; and (ii) all off-balance sheet arrangements that have or
      are reasonably likely to have a current or future effect on the financial
      condition, changes in financial condition, revenues or expenses, results
      of operations, liquidity, capital expenditures or capital resources of the
      Company and the Subsidiaries taken as a whole.

            (yy)  Since the date of the filing of the Company's Annual Report on
      Form 10-K for the year ended June 30, 2004, the Company's auditors and the
      audit committee of the board of directors of the Company (or persons
      fulfilling the equivalent function) have not been advised of (i) any
      significant deficiencies in the design or operation of internal controls
      which adversely affect the Company's ability to record, process, summarize
      and report financial data nor any material weaknesses in internal
      controls; and (ii) fraud, whether or not material, that involves
      management or other employees who have a significant role in the Company's
      internal controls.

            (zz)  Since the date of the filing of the Company's Annual Report on
      Form 10-K for the year ended June 30, 2004, there have been no significant
      changes in internal controls or in other factors that could significantly
      affect internal controls, including any corrective actions with regard to
      significant deficiencies.

            (aaa) Except as disclosed in the Offering Memorandum (or, if the
      Offering Memorandum is not in existence, the Preliminary Offering
      Memorandum), there are no outstanding guarantees or other contingent
      obligations of the Company or any Subsidiary that could reasonably be
      expected to have a Material Adverse Effect.

                                       17
<PAGE>

      Any certificate signed by or on behalf of the Company and delivered to the
Initial Purchasers or to counsel for the Initial Purchasers shall be deemed to
be a representation and warranty by the Company to each Initial Purchaser as to
the matters covered thereby.

      3.    Purchase, Sale and Delivery of the Notes.

            (a)   On the basis of the representations, warranties, agreements
      and covenants herein contained and subject to the terms and conditions
      herein set forth, the Company agrees to issue and sell to the Initial
      Purchasers, and the Initial Purchasers, severally and not jointly, agree
      to purchase from the Company, at 97% of their principal amount, the
      respective aggregate principal amounts of the Firm Notes set forth on
      Schedule 1 hereto.

            (b)   In addition, on the basis of the representations, warranties
      and agreements herein contained, but subject to the terms and conditions
      herein set forth, the Company hereby grants an option to the Initial
      Purchasers, to purchase up to $25,000,000 in aggregate principal amount of
      Optional Notes from the Company at the same price as the purchase price to
      be paid by the Initial Purchasers for the Firm Notes, plus accrued
      interest, if any, from the Closing Date to the Additional Closing Date (as
      hereinafter defined). The option granted hereunder may be exercised at any
      time, on or before the thirteenth day following the date of the Offering
      Memorandum upon notice by the Initial Purchasers to the Company, which
      notice may be given from time to time on one or more occasions. Such
      notice shall set forth (i) the amount (which shall be an integral multiple
      of $1,000 in aggregate principal amount at issuance) of Optional Notes as
      to which the Initial Purchasers are exercising the option and (ii) the
      time, date and place at which such Optional Notes will be delivered (which
      time and date may be simultaneous with, but not earlier than, the Closing
      Date (as defined in Section 3 below) and in such case, the term "Closing
      Date" shall refer to the time and date of delivery of the Firm Notes and
      the Optional Notes). Such time and date of delivery, if subsequent to the
      Closing Date, is called the "Additional Closing Date." The Additional
      Closing Date must be not later than eight full business days after the
      date the Initial Purchasers exercise the option, with the actual date
      determined by the Initial Purchasers, nor in any event later than twelve
      days following the initial Closing Date. The Initial Purchasers may cancel
      the option at any time prior to its expiration by giving written notice of
      such cancellation to the Company.

            (c)   One or more certificates in definitive form for the Firm Notes
      that the Initial Purchasers have agreed to purchase hereunder, and in such
      denomination or denominations and registered in such name or names as the
      Initial Purchasers request upon notice to the Company at least 48 hours
      prior to the Closing Date, shall be delivered by or on behalf of the
      Company, against payment by or on behalf of the Initial Purchasers of the
      purchase price therefor by wire transfer of immediately available funds to
      the account of the Company previously designated by it in writing. Such
      delivery of and payment for the Firm

                                       18
<PAGE>

      Notes shall be made at the offices of Latham & Watkins LLP, 135
      Commonwealth Drive, Menlo Park, California 94025, at 9:00 a.m., New York
      time, on December 7, 2004, or at such date as the Initial Purchasers and
      the Company may agree upon, such time and date of delivery against payment
      being herein referred to as the "Closing Date." The Company will make such
      certificate or certificates for the Notes available for inspection by the
      Initial Purchasers at the offices in Menlo Park, California of Latham &
      Watkins LLP at least 24 hours prior to the Closing Date.

            (d)   Delivery to the Initial Purchasers of and payment for the
      Optional Notes shall be made on the Additional Closing Date in the same
      manner and in the same office and at the same time of days as payment for
      the Firm Notes.

      4.    Offering by the Initial Purchasers. The Initial Purchasers propose
to make an offering of the Notes at the price and upon the terms set forth in
the Offering Memorandum as soon as practicable after this Agreement is entered
into and as in the judgment of the Initial Purchasers is advisable.

      5.    Certain Covenants. For purposes of this Section 5, "Closing Date"
shall refer to the Closing Date for the Firm Notes and any Additional Closing
Date for the Optional Notes. The Company covenants and agrees with the Initial
Purchasers that:

            (a)   The Company will not amend or supplement the Preliminary
      Offering Memorandum or the Offering Memorandum or any amendment or
      supplement thereto of which the Initial Purchasers shall not previously
      have been advised and furnished a copy for a reasonable period of time
      prior to the proposed amendment or supplement and as to which the Initial
      Purchasers shall not have given their consent (which consent shall not be
      unreasonably withheld or delayed). The Company will promptly, upon the
      reasonable request of the Initial Purchasers or counsel to the Initial
      Purchasers, make any amendments or supplements to the Offering Memorandum
      that may be reasonably necessary or advisable in connection with the
      resale of the Notes by the Initial Purchasers.

            (b)   The Company will cooperate with the Initial Purchasers in
      arranging for the qualification of the Notes for offering and sale under
      the securities or "Blue Sky" laws of such jurisdictions as the Initial
      Purchasers may designate and will continue such qualifications in effect
      for as long as may be necessary to complete the distribution of the Notes
      by the Initial Purchasers; provided, however, that in connection therewith
      the Company shall not be required to qualify as a foreign corporation or
      to execute a general consent to service of process in any jurisdiction or
      to take any other action that would subject it to general service of
      process or to taxation in respect of doing business in any jurisdiction in
      which it is not otherwise subject.

                                       19
<PAGE>

            (c)   If, at any time prior to the completion of the resale by the
      Initial Purchasers of the Notes, any event shall occur as a result of
      which it is necessary, in the opinion of counsel for the Initial
      Purchasers, to amend or supplement the Offering Memorandum in order to
      make such Offering Memorandum not misleading in the light of the
      circumstances existing at the time it is delivered to a purchaser, or if
      for any other reason it shall be necessary to amend or supplement the
      Offering Memorandum in order to comply with applicable laws, rules or
      regulations, the Company shall (subject to Section 5(a)) forthwith amend
      or supplement such Offering Memorandum at its own expense so that, as so
      amended or supplemented, such Offering Memorandum will not include an
      untrue statement of a material fact or omit to state a material fact
      necessary in order to make the statements therein not misleading and will
      comply with all applicable laws, rules or regulations.

            (d)   The Company will, without charge, provide to the Initial
      Purchasers and to counsel to the Initial Purchasers as many copies of the
      Offering Memorandum or any amendment or supplement thereto as the Initial
      Purchasers or their counsel may reasonably request.

            (e)   During the period of three years from the Closing Date, the
      Company will furnish to the Initial Purchasers (a) as soon as available, a
      copy of each report and other communication (financial or otherwise) of
      the Company mailed to the Trustee or the holders of the Notes,
      stockholders or any national securities exchange on which any class of
      securities of the Company may be listed other than materials filed with
      the Commission and (b) from time to time such other information concerning
      the Company and the Subsidiaries as the Initial Purchasers may reasonably
      request.

            (f)   The Company will apply the net proceeds from the sale of the
      Notes materially as set forth under "Use of Proceeds" in the Offering
      Memorandum.

            (g)   None of the Company or any of its respective Affiliates will
      sell, offer for sale or solicit offers to buy or otherwise negotiate in
      respect of any "security" (as defined in the Securities Act) which could
      be integrated with the sale of the Notes in a manner which would require
      the registration under the Securities Act of the Notes.

            (h)   For so long as the Notes constitute "restricted" securities
      within the meaning of Rule 144(a)(3) under the Securities Act, the Company
      will not, and will not permit any of the Subsidiaries to, offer to sell
      the Notes or solicit any offer to buy the Notes by means of any form of
      general solicitation or general advertising (as those terms are used in
      Regulation D under the Securities Act) or in any manner involving a public
      offering within the meaning of Section 4(2) of the Securities Act.

                                       20
<PAGE>

            (i)   For so long as any of the Notes remain outstanding and are
      "restricted securities" within the meaning of Rule 144(a)(3) under the
      Securities Act and not able to be sold in their entirety under Rule 144
      under the Securities Act (or any successor provision), the Company will
      make available, upon request, to any seller of such Notes the information
      specified in Rule 144A(d)(4) under the Securities Act, unless the Company
      is then subject to Section 13 or 15(d) of the Exchange Act.

            (j)   During the period from the Closing Date until two years after
      the Closing Date, without the prior written consent of the Initial
      Purchasers, the Company will not, and will not permit any of its
      "affiliates" (as defined in Rule 144 under the Securities Act) to, resell
      any of the Securities which constitute "restricted securities" under Rule
      144 that have been reacquired by any of them.

            (k)   The Company will not take any action prohibited by Regulation
      M under the Exchange Act, in connection with the distribution of the
      Securities contemplated hereby.

            (l)   The Company will (i) permit the Notes to be included for
      quotation on the PORTAL Market and (ii) permit the Notes to be eligible
      for clearance and settlement through The Depository Trust Company.

            (m)   The Company will use its best efforts to list the Conversion
      Shares for quotation on the Nasdaq National Market as promptly as
      practicable but in no event later than the time that the Registration
      Statement is declared effective in accordance with the Registration Rights
      Agreement.

            (n)   The Company will, at all times, reserve and keep available,
      free of preemptive rights, enough shares of Common Stock for the purpose
      of enabling the Company to satisfy its obligations to issue the Conversion
      Shares upon conversion of the Notes.

            (o)   During the period of 60 days from the date of the Offering
      Memorandum, without the prior written consent of the Initial Purchasers,
      the Company (i) will not, directly or indirectly, issue, offer, sell,
      agree to issue, offer or sell, solicit offers to purchase, grant any call
      option, warrant or other right to purchase, purchase any put option or
      other right to sell, pledge, borrow or otherwise dispose of any Relevant
      Security, or make any announcement of any of the foregoing, (ii) will not
      establish or increase any "put equivalent position" or liquidate or
      decrease any "call equivalent position" (in each case within the meaning
      of Section 16 of the Exchange Act and the rules and regulations
      promulgated thereunder) with respect to any Relevant Security, and (iii)
      will not otherwise enter into any swap, derivative or other transaction or
      arrangement that transfers to another, in whole or in part, any economic
      consequence of ownership of a Relevant Security, whether or not such
      transaction is to be settled by delivery of Relevant Securities, other
      securities, cash or other consideration, other than the sale of Notes as
      contemplated by this Agreement, the issuance of the Conversion

                                       21
<PAGE>

      Shares, and the Company's issuance of Common Stock upon (i) the exercise
      of currently outstanding options; and (ii) the grant and exercise of
      options under, or the issuance and sale of shares pursuant to, employee
      stock option or employee stock purchase plans in effect on the date
      hereof, each as described in the Offering Memorandum. The Company will not
      file a registration statement under the Securities Act in connection with
      any transaction by the Company or any person that is prohibited pursuant
      to the foregoing, except for (i) the Company's filing of registration
      statements pursuant to the Registration Rights Agreement, and (ii)
      registration statements on Form S-8 relating to employee benefit plans or
      on Form S-4 relating to corporate reorganizations or other transactions
      under Rule 145.

      6.    Expenses. Whether or not the Offering is consummated or this
Agreement is terminated (pursuant to Section 12 or otherwise), the Company
agrees to pay the following costs and expenses and all other costs and expenses
incident to the performance by the Company of its obligations hereunder: (i) the
negotiation, preparation, printing, typing, reproduction, execution and delivery
of this Agreement and of the other Offering Documents, any amendment or
supplement to or modification of any of the foregoing and any and all other
documents furnished pursuant hereto or thereto or in connection herewith or
therewith; (ii) the preparation, printing or reproduction of each Preliminary
Offering Memorandum, the Offering Memorandum and each amendment or supplement to
any of them; (iii) the delivery (including postage, air freight charges and
charges for counting and packaging) of such copies of the Offering Memorandum
and all amendments or supplements to any of them as may be reasonably requested
for use in connection with the offering and sale of the Notes; (iv) the
preparation, printing, authentication, issuance and delivery of certificates for
the Notes and the Conversion Shares, including any stamp taxes in connection
with the original issuance and sale of the Securities and trustees' fees; (v)
the reproduction and delivery of this Agreement and the other Offering
Documents, the preliminary and supplemental "Blue Sky" memoranda and all other
agreements or documents reproduced and delivered in connection with the offering
of the Securities; (vi) the registration or qualification of the Securities for
offer and sale under the securities or Blue Sky laws of the several states
(including filing fees and the reasonable fees, expenses and disbursements of
counsel to the Initial Purchasers relating to such registration and
qualification); (vii) the transportation and other expenses incurred by or on
behalf of Company representatives in connection with presentations to and
related communications with prospective purchasers of the Notes; (viii) the fees
and expenses of the Company's accountants and the fees and expenses of counsel
(including local and special counsel, if any) for the Company; (ix) fees and
expenses of the Trustee including fees and expenses of its counsel; (x) all
expenses and listing fees incurred in connection with the application for
quotation of the Notes on the PORTAL Market; (xi) all expenses and listing fees
incurred in connection with the application for listing for quotation of the
Conversion Shares on the Nasdaq National Market; (xii) all expenses incurred in
connection with the performance of the Company's obligations under the
Registration Rights Agreement; and (xiii) any fees charged by investment rating
agencies for the rating of the Notes.

      7.    Conditions of the Initial Purchasers' Obligations. For purposes of
this Section 7, "Closing Date" shall refer to the Closing Date for the Firm
Notes and any

                                       22
<PAGE>

Additional Closing Date for the Optional Notes. The obligations of the Initial
Purchasers to purchase and pay for the Notes are subject to the absence from any
certificates or opinions furnished to the Initial Purchasers pursuant to this
Section 7 of any misstatement or omissions and to the following additional
conditions unless waived in writing by the Initial Purchasers:

            (i)   The Initial Purchasers shall have received an opinion of
      counsel in form and substance satisfactory to the Initial Purchasers and
      Latham & Watkins LLP, counsel to the Initial Purchasers, dated the Closing
      Date, of Greenberg Traurig, LLP, counsel to the Company, substantially in
      the form of Exhibit B hereto.

            (ii)  The Initial Purchasers shall have received opinions of counsel
      in form and substance satisfactory to the Initial Purchasers and Latham &
      Watkins LLP, counsel to the Initial Purchasers, dated the Closing Date, of
      (i) Deacons, counsel to Synaptics Hong Kong Limited, (ii) Vincent Stykes &
      Higham, counsel to Synaptics (UK) Limited and (iii) Peter Georg Studer,
      counsel to Synaptics Holding GmbH, substantially in the form of Exhibit C
      hereto.

            (iii) The Initial Purchasers shall have received an opinion of
      counsel in form previously delivered to the Initial Purchasers and in
      substance satisfactory to the Initial Purchasers and Latham & Watkins LLP,
      counsel to the Initial Purchasers, dated the Closing Date, of Ingrassia
      Fisher & Lorenz, P.C., intellectual property counsel to the Company.

            (iv)  Upon the request of the Initial Purchasers, the Initial
      Purchasers shall have received an opinion of counsel in form and substance
      satisfactory to the Initial Purchasers and Latham & Watkins LLP, counsel
      to the Initial Purchasers, dated the Closing Date, of Beresford & Co.,
      intellectual property counsel to Synaptics (UK) Limited.

            (v)   The Initial Purchasers shall have received an opinion, dated
      the Closing Date, of Latham & Watkins LLP, counsel to the Initial
      Purchasers, with respect to the sufficiency of certain legal matters
      relating to this Agreement and such other related matters as the Initial
      Purchasers may require.

            (vi)  The Initial Purchasers shall have received from KPMG LLP,
      independent public accountants for the Company, a "comfort" letter dated
      the date hereof and the Closing Date, in form and substance reasonably
      satisfactory to the Initial Purchasers and Latham & Watkins LLP, counsel
      to the Initial Purchasers.

            (vii) The Initial Purchasers shall have received from Ernst & Young
      LLP, independent public accountants for the Company, a "comfort" letter
      dated the Closing Date, in the form of Exhibit D hereto.

                                       23
<PAGE>

            (viii) The Initial Purchasers shall have received from each of the
      officers and directors listed on Schedule 2 hereto an executed Lock-Up
      Agreement in substantially in the form of Exhibit E hereto.

            (ix)  The representations and warranties of the Company contained in
      this Agreement shall be true and correct on and as of the Closing Date;
      the Company shall have complied in all material respects with all
      agreements and satisfied all conditions on their part to be performed or
      satisfied hereunder at or prior to the Closing Date.

            (x)   None of the issuance and sale of the Securities pursuant to
      this Agreement or any of the transactions contemplated by any of the other
      Offering Documents shall be enjoined (temporarily or permanently) and no
      restraining order or other injunctive order shall have been issued; and
      there shall not have been any legal action, statute, order, decree or
      other administrative proceeding enacted, instituted or threatened against
      the Company or against the Initial Purchasers relating to the issuance of
      the Securities or the Initial Purchasers' activities in connection
      therewith or any other transactions contemplated by this Agreement or the
      Offering Memorandum, or the other Offering Documents.

            (xi)  Subsequent to the date of this Agreement and since the date of
      the most recent financial statements in the Offering Memorandum (exclusive
      of any amendment or supplement thereto after the date hereof), there shall
      not have occurred (i) any change, or any development involving a
      prospective change, in or affecting the general affairs, management,
      business, condition (financial or other), properties or results of
      operations of the Company or any of the Subsidiaries, not contemplated by
      the Offering Memorandum that is, in the judgment of the Initial
      Purchasers, so material and adverse as to make it impracticable or
      inadvisable to proceed with the offering of the Securities on the terms
      and in the manner contemplated by the Offering Documents, or (ii) any
      event or development relating to or involving the Company or any of the
      Subsidiaries, or any of their respective officers or directors, that makes
      any statement made in the Offering Memorandum untrue in any material
      respect or that, in the opinion of the Company and its counsel or the
      Initial Purchasers and their counsel, require the making of any addition
      to or change in the Offering Memorandum in order to state a material fact
      required by any applicable law, rule or regulation to be stated therein or
      necessary in order to make the statements made therein not misleading.

            (xii) The Initial Purchasers shall have received certificates, dated
      the Closing Date and signed by the chief executive officer and the chief
      financial officer of the Company (in their capacities as such), to the
      effect that:

                  a.    All of the representations and warranties of the Company
            set forth in this Agreement are true and correct as if made on

                                       24
<PAGE>

            and as of the Closing Date and, as of the Closing Date all
            agreements, conditions and obligations of the Company to be
            performed, satisfied or complied with hereunder on or prior the
            Closing Date have been duly performed, satisfied or complied with.

                  b.    The issuance and sale of the Notes pursuant to this
            Agreement and the Offering Memorandum and the consummation of the
            transactions contemplated by the Offering Documents have not been
            enjoined (temporarily or permanently) and no restraining order or
            other injunctive order has been issued and there has not been any
            legal action, order, decree or other administrative proceeding
            instituted or, to such officers' knowledge, threatened against the
            Company relating to the issuance of the Securities or the Initial
            Purchasers' activities in connection therewith or in connection with
            any other transactions contemplated by this Agreement or the
            Offering Memorandum or the other Offering Documents.

                  c.    Subsequent to the date of this Agreement and since the
            date of the most recent financial statements in the Offering
            Memorandum (exclusive of any amendment or supplement thereto after
            the date hereof), there has not occurred (i) any material change, or
            any development involving a prospective material change, in the
            general affairs, management, business, condition (financial or
            other), properties or results of operations of the Company or any of
            the Subsidiaries, not contemplated by the Offering Memorandum, or
            (ii) any event or development relating to or involving the Company
            or any of the Subsidiaries, or any of their respective officers or
            directors that makes any statement made in the Offering Memorandum
            untrue in any material respect or that requires the making of any
            addition to or change in the Offering Memorandum in order to state a
            material fact required by any applicable law, rule or regulation to
            be stated therein or necessary in order to make the statements made
            therein not misleading.

                  d.    At the Closing Date and after giving effect to the
            consummation of the transactions contemplated by the Offering
            Documents, there exists no Default or Event of Default (as defined
            in the Indenture).

            (xiii) Each of the Offering Documents and each other agreement or
      instrument executed in connection with the transactions contemplated
      thereby shall be reasonably satisfactory in form and substance to the
      Initial Purchasers and shall have been executed and delivered by all the
      respective parties thereto and shall be in full force and effect, and
      there shall have been no material amendments, alterations, modifications
      or waivers of any provision thereof since the date of this Agreement.

                                       25
<PAGE>

            (xiv) All proceedings taken in connection with the issuance of the
      Notes and the transactions contemplated by this Agreement, the other
      Offering Documents and all documents and papers relating thereto shall be
      reasonably satisfactory to the Initial Purchasers and counsel to the
      Initial Purchasers. The Initial Purchasers and counsel to the Initial
      Purchasers shall have received copies of such papers and documents as they
      may reasonably request in connection therewith, all in form and substance
      reasonably satisfactory to them.

            (xv)  The Notes shall have been approved for trading on The PORTAL
      Market.

            (xvi) Since the date of this Agreement, there shall not have been
      any announcement by any "nationally recognized statistical rating
      organization," as defined for purposes of Rule 436(g) under the Securities
      Act, that (A) it is downgrading its rating assigned to any debt securities
      of the Company, or (B) it is reviewing its rating assigned to any debt
      securities of the Company with a view to possible downgrading, or with
      negative implications, or direction not determined.

            (xvii) On or before the Closing Date, the Initial Purchasers shall
      have received the Registration Rights Agreement executed by the Company
      and such agreement shall be in full force and effect.

            (xviii) The Company shall have furnished or caused to be furnished
      to the Initial Purchasers such further certificates and documents as the
      Initial Purchasers shall have reasonably requested.

            (xix) At the Closing Date, the Company and the Trustee shall have
      entered into the Indenture and the Initial Purchasers shall have received
      counterparts, conformed as executed, thereof and the Notes shall have been
      duly executed and delivered by the Company and duly authenticated by the
      Trustee.

      All such opinions, certificates, letters, schedules, documents or
instruments delivered pursuant to this Agreement will comply with the provisions
hereof only if they are reasonably satisfactory in all material respects to the
Initial Purchasers and counsel to the Initial Purchasers. The Company shall
furnish to the Initial Purchasers such conformed copies of such opinions,
certificates, letters, schedules, documents and instruments in such quantities
as the Initial Purchasers shall reasonably request.

      8.    Indemnification.

            (a)   The Company shall indemnify and hold harmless (i) each Initial
      Purchaser, (ii) each person, if any, who controls an Initial Purchaser
      within the meaning of Section 15 of the Securities Act or Section 20 of
      the Exchange Act and (iii) the respective officers, directors, partners,
      employees, representatives and agents of each of the Initial Purchasers or
      any controlling person, from and

                                       26
<PAGE>

      against any and all losses, liabilities, claims, damages and expenses
      whatsoever as incurred (including but not limited to attorneys' fees and
      any and all expenses whatsoever incurred in investigating, preparing or
      defending against any investigation or litigation, commenced or
      threatened, or any claim whatsoever, and any and all amounts paid in
      settlement of any claim or litigation), joint or several, to which they or
      any of them may become subject under the Securities Act, the Exchange Act
      or otherwise, insofar as such losses, liabilities, claims, damages or
      expenses (or actions in respect thereof) arise out of or are based upon
      (i) any untrue statement or alleged untrue statement of a material fact
      contained in (A) the Preliminary Offering Memorandum or the Offering
      Memorandum, or in any supplement thereto or amendment thereof, or (B) any
      materials or information provided to investors by, or with the approval
      of, the Company in connection with the marketing of the Securities,
      including any road show or investor presentations made to investors by the
      Company (whether in person or electronically) ("Marketing Materials"), or
      (ii) the omission or alleged omission to state in the Preliminary Offering
      Memorandum or the Offering Memorandum, or in any supplement thereto or
      amendment thereof, or in any Marketing Materials, a material fact required
      to be stated therein or necessary to make the statements therein not
      misleading; provided, however, that the Company will not be liable in any
      such case to the extent, but only to the extent, that any such loss,
      liability, claim, damage or expense arises out of or is based upon any
      such untrue statement or alleged untrue statement or omission or alleged
      omission made therein in reliance upon and in conformity with written
      information furnished to the Company by or on behalf of the Initial
      Purchasers expressly for use therein. The parties acknowledge and agree
      that such information provided by or on behalf of the Initial Purchasers
      consists solely of the material identified in Section 16 hereof. This
      indemnity agreement will be in addition to any liability that the Company
      may otherwise have, including under this Agreement.

            (b)   Each Initial Purchaser, severally and not jointly, shall
      indemnify and hold harmless (i) the Company, (ii) each person, if any, who
      controls the Company within the meaning of Section 15 of the Securities
      Act or Section 20 of the Exchange Act, and (iii) the officers, directors,
      partners, employees, representatives and agents of the Company, against
      any losses, liabilities, claims, damages and expenses whatsoever as
      incurred (including but not limited to attorneys' fees and any and all
      expenses whatsoever incurred in investigating, preparing or defending
      against any investigation or litigation, commenced or threatened, or any
      claim whatsoever and any and all amounts paid in settlement of any claim
      or litigation), joint or several, to which they or any of them may become
      subject under the Securities Act, the Exchange Act or otherwise, insofar
      as such losses, liabilities, claims, damages or expenses (or actions in
      respect thereof) arise out of or are based upon any untrue statement or
      alleged untrue statement of a material fact contained in the Preliminary
      Offering Memorandum or the Offering Memorandum, or in any amendment
      thereof or supplement thereto, or arise out of or are based upon the
      omission or alleged omission to state therein a material fact required to
      be stated therein or necessary to make the statements therein not
      misleading, in each case to the extent, but only

                                       27
<PAGE>

      to the extent, that any such loss, liability, claim, damage or expense
      arises out of or is based upon any untrue statement or alleged untrue
      statement or omission or alleged omission made therein in reliance upon
      and in conformity with written information furnished to the Company by or
      on behalf of such Initial Purchaser expressly for use therein; provided,
      however, that in no case shall any Initial Purchaser be liable or
      responsible for any amount in excess of the discounts and commissions
      received by such Initial Purchaser. The parties acknowledge and agree that
      such information provided by or on behalf of the Initial Purchasers
      consists solely of the material identified in Section 16 hereof. This
      indemnity will be in addition to any liability that the Initial Purchasers
      may otherwise have, including under this Agreement.

            (c)   Promptly after receipt by an indemnified party under
      subsection (a) or (b) above of notice of the commencement of any action,
      such indemnified party shall, if a claim in respect thereof is to be made
      against the indemnifying party under such subsection, notify each party
      against whom indemnification is to be sought in writing of the
      commencement thereof (but the failure so to notify an indemnifying party
      shall not relieve it from any liability which it may have under this
      Section 8). In case any such action is brought against any indemnified
      party, and it notifies an indemnifying party of the commencement thereof,
      the indemnifying party will be entitled to participate, at its own expense
      in the defense of such action, and to the extent it may elect by written
      notice delivered to the indemnified party promptly after receiving the
      aforesaid notice from such indemnified party, to assume the defense
      thereof with counsel satisfactory to such indemnified party; provided,
      however, that counsel to the indemnifying party shall not (except with the
      written consent of the indemnified party) also be counsel to the
      indemnified party. Notwithstanding the foregoing, the indemnified party or
      parties shall have the right to employ its or their own counsel in any
      such case, but the fees and expenses of such counsel shall be at the
      expense of such indemnified party or parties unless (i) the employment of
      such counsel shall have been authorized in writing by one of the
      indemnifying parties in connection with the defense of such action, (ii)
      the indemnifying parties shall not have employed counsel to take charge of
      the defense of such action within a reasonable time after notice of
      commencement of the action, (iii) the indemnifying party does not
      diligently defend the action after assumption of the defense, or (iv) such
      indemnified party or parties shall have reasonably concluded that there
      may be defenses available to it or them which are different from or
      additional to those available to one or all of the indemnifying parties
      (in which case the indemnifying party or parties shall not have the right
      to direct the defense of such action on behalf of the indemnified party or
      parties), in any of which events such fees and expenses of one counsel, in
      addition to local counsel, shall be borne by the indemnifying parties. No
      indemnifying party shall, without the prior written consent of the
      indemnified parties, effect any settlement or compromise of, or consent to
      the entry of judgment with respect to, any pending or threatened claim,
      investigation, action or proceeding in respect of which indemnity or
      contribution may be or could have been sought by an indemnified party
      under this Section 8 or Section 9 hereof (whether or not the

                                       28
<PAGE>

      indemnified party is an actual or potential party thereto), unless (x)
      such settlement, compromise or judgment (i) includes an unconditional
      release of the indemnified party from all liability arising out of such
      claim, investigation, action or proceeding and (ii) does not include a
      statement as to or an admission of fault, culpability or any failure to
      act, by or on behalf of the indemnified party, and (y) the indemnifying
      party confirms in writing its indemnification obligations hereunder with
      respect to such settlement, compromise or judgment.

      9.    Contribution. In order to provide for contribution in circumstances
in which the indemnification provided for in Section 8 is for any reason held to
be unavailable from an indemnifying party or is insufficient to hold harmless a
party indemnified thereunder, the Company, on the one hand, and the Initial
Purchasers, on the other hand, shall contribute to the aggregate losses,
liabilities, claims, damages and expenses of the nature contemplated by such
indemnification provision (including any investigation, legal and other expenses
incurred in connection with, and any amount paid in settlement of, any action,
suit or proceeding or any claims asserted, but after deducting in the case of
losses, liabilities, claims, damages and expenses suffered by the Company, any
contribution received by the Company from persons, other than the Initial
Purchasers, who may also be liable for contribution, including persons who
control the Company within the meaning of Section 15 of the Securities Act or
Section 20 of the Exchange Act) to which the Company and the Initial Purchasers
may be subject, in such proportion as is appropriate to reflect the relative
benefits received by the Company, on the one hand, and the Initial Purchasers,
on the other hand, from the offering of the Notes or, if such allocation is not
permitted by applicable law or indemnification is not available as a result of
the indemnifying party not having received notice as provided in Section 8, in
such proportion as is appropriate to reflect not only the relative benefits
referred to above but also the relative fault of the Company, on the one hand,
and the Initial Purchasers, on the other hand, in connection with the statements
or omissions which resulted in such losses, liabilities, claims, damages or
expenses, as well as any other relevant equitable considerations. The relative
benefits received by the Company, on the one hand, and the Initial Purchasers,
on the other hand, shall be deemed to be in the same proportion as (i) the total
proceeds from the offering of the Notes (net of discounts but before deducting
expenses) received by the Company bear to (ii) the discounts and commissions
received by the Initial Purchasers, respectively. The relative fault of the
Company, on the one hand, and of the Initial Purchasers, on the other hand,
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by the Company or the
Initial Purchasers and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.
The Company and the Initial Purchasers agree that it would not be just and
equitable if contribution pursuant to this Section 9 were determined by pro rata
allocation (even if the Initial Purchasers were treated as one entity for such
purpose) or by any other method of allocation which does not take into account
the equitable considerations referred to above. The aggregate amount of losses,
liabilities, claims, damages and expenses incurred by an indemnified party and
referred to above in this Section 8 shall be deemed to include any legal or
other expenses reasonably incurred by such indemnified party in investigating,
preparing or defending against any litigation,

                                       29
<PAGE>

or any investigation or proceeding by any judicial, regulatory or other legal or
governmental agency or body, commenced or threatened, or any claim whatsoever
based upon any such untrue or alleged untrue statement or omission or alleged
omission. Notwithstanding the provisions of this Section 9, (i) in no case shall
any Initial Purchaser be required to contribute any amount in excess of the
amount by which the discounts and commissions applicable to the Notes purchased
by such Initial Purchaser pursuant to this Agreement exceeds the amount of any
damages which such Initial Purchaser has otherwise been required to pay by
reason of any untrue or alleged untrue statement or omission or alleged omission
and (ii) no person guilty of fraudulent misrepresentation (within the meaning of
Section 11(f) of the Securities Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation. For purposes of
this Section 9, (A) each person, if any, who controls any Initial Purchaser
within the meaning of Section 15 of the Securities Act or Section 20 of the
Exchange Act and (B) the respective officers, directors, partners, employees,
representatives and agents of any Initial Purchaser or any controlling person
shall have the same rights to contribution as such Initial Purchaser, and (1)
each person, if any, who controls any Company within the meaning of Section 15
of the Securities Act or Section 20 of the Exchange Act and (2) the officers,
directors, employees, representatives and agents of the Company shall have the
same rights to contribution as the Company, subject in each case to clauses (i)
and (ii) of this Section 9. Any party entitled to contribution will, promptly
after receipt of notice of commencement of any action, suit or proceeding
against such party in respect of which a claim for contribution may be made
against another party or parties under this Section 9, notify such party or
parties from whom contribution may be sought, but the failure to so notify such
party or parties shall not relieve the party or parties from whom contribution
may be sought from any obligation it or they may have under this Section 9 or
otherwise. No party shall be liable for contribution with respect to any action
or claim settled without its prior written consent, provided that such written
consent was not unreasonably withheld or delayed. The Initial Purchasers'
obligations to contribute pursuant to this Section 9 are several in proportion
to the respective principal amount of the Notes purchased by each of the Initial
Purchasers hereunder and not joint.

      10.   Offering of Securities; Restrictions on Transfer. Each Initial
Purchaser represents and warrants as to itself only that it is a QIB. Each
Initial Purchaser agrees with the Company as to itself only that (i) it has not
and will not solicit offers for, or offer or sell, the Securities by any form of
general solicitation or general advertising (as those terms are used in
Regulation D under the Securities Act) or in any manner involving a public
offering within the meaning of Section 4(2) of the Securities Act; and (ii) it
has and will solicit offers for the Securities only from, and will offer the
Securities only to, persons within the United States whom such Initial Purchaser
reasonably believes to be QIBs or, if any such person is buying for one or more
institutional accounts for which such person is acting as fiduciary or agent,
only when such person has represented to such Initial Purchaser that each such
account is a QIB, to whom notice has been given that such sale or delivery is
being made in reliance on Rule 144A and, in each case, in transactions under
Rule 144A.

      11.   Survival Clause. The respective representations, warranties,
agreements, covenants, indemnities and other statements of the Company, its
officers and

                                       30
<PAGE>

the Initial Purchasers set forth in this Agreement or made by or on behalf of
them, respectively, pursuant to this Agreement shall remain in full force and
effect, regardless of (i) any investigation made by or on behalf of the Company,
any of its officers or directors, the Initial Purchasers or any controlling
person referred to in Sections 8 and 9 hereof and (ii) delivery of and payment
for the Notes, and shall be binding upon and shall inure to the benefit of, any
successors, assigns, heirs, or personal representatives of the Company, the
Initial Purchasers and indemnified parties referred to in Section 8 hereof. The
respective agreements, covenants, indemnities and other statements set forth in
Sections 6, 8, 9, 11 and 12 hereof shall remain in full force and effect,
regardless of any termination or cancellation of this Agreement.

      12.   Termination. (a) This Agreement may be terminated in the sole
discretion of the Initial Purchasers by notice to the Company given in the event
that the Company has failed, refused or been unable to satisfy all conditions on
its part to be performed or satisfied hereunder on or prior to the Closing Date
or if, at or prior to the Closing Date or at or prior to the Additional Closing
Date, as the case may be:

                  (i)   any domestic or international event or act or occurrence
      has materially disrupted, or in the opinion of the Initial Purchasers will
      in the immediate future materially disrupt, the market for the Company's
      securities or securities in general;

                  (ii)  trading on the New York Stock Exchange or the Nasdaq
      National Market, shall have been suspended or made subject to material
      limitations, or minimum or maximum prices for trading shall have been
      fixed, or maximum ranges for prices for securities shall have been
      required, on the New York Stock Exchange or the Nasdaq National Market, or
      by order of the Commission or other regulatory body or governmental
      authority having jurisdiction;

                  (iii) a banking moratorium has been declared by any state or
      federal authority or if any material disruption in commercial banking or
      securities settlement or clearance services shall have occurred;

                  (iv)  (A) there shall have occurred any outbreak or escalation
      of hostilities or acts of terrorism involving the United States or there
      is a declaration of a national emergency or war by the United States, or
      (B) there shall have been any other calamity or crisis or any change in
      political, financial or economic conditions, if the effect of any such
      event in (A) or (B), in the judgment of the Initial Purchasers, makes it
      impracticable or inadvisable to proceed with the offering, sale and
      delivery of the Firm Notes or the Optional Notes, as the case may be, on
      the terms and in the manner contemplated by the Offering Memorandum; or

                  (v)   any debt securities of the Company shall have been
      downgraded or placed on any "watch list" for possible downgrading by any

                                       31
<PAGE>

      "nationally recognized statistical rating organization" as defined for
      purposes of Rule 436(g) under the Securities Act.

                  (b)   Subject to paragraph (c) below, termination of this
      Agreement pursuant to this Section 12 shall be without liability of any
      party to any other party except as provided in Section 11 hereof.

                  (c)   If this Agreement shall be terminated pursuant to any of
      the provisions hereof (other than clauses (i)-(v) above), or if the sale
      of the Notes provided for herein is not consummated because any condition
      to the obligations of the Initial Purchasers set forth herein is not
      satisfied, the Company will, subject to demand by the Initial Purchasers,
      reimburse the Initial Purchasers for all out-of-pocket expenses (including
      the fees and expenses of their counsel), incurred by the Initial
      Purchasers in connection herewith.

      13.   Notices. All communications hereunder shall be in writing and, if
sent to the Initial Purchasers, shall be hand delivered, mailed by first-class
mail, couriered by next-day air courier or telecopied and confirmed in writing
to the Initial Purchasers c/o Bear Stearns & Co. Inc., 383 Madison Avenue, New
York, New York 10179, Attention: Stephen Parish, Equity Capital Markets, and
with a copy to Latham & Watkins LLP, 135 Commonwealth Drive, Menlo Park,
California 94025, Attention: Alan C. Mendelson. If sent to the Company, shall be
delivered, mailed, couriered or telecopied and confirmed in writing, to
Synpatics Incorporated, 2381 Bering Drive, San Jose, California 95131,
Attention: Francis F. Lee, and with a copy to Greenberg Traurig, LLP, 2375 E.
Camelback Road, Suite 700, Phoenix, Arizona 85016, Attention: Robert S. Kant.

      14.   Successors. This Agreement shall inure to the benefit of and be
binding upon each Initial Purchaser and the Company and their respective
successors and legal representatives, and nothing expressed or mentioned in this
Agreement is intended or shall be construed to give any other person any legal
or equitable right, remedy or claim under or in respect of this Agreement, or
any provisions herein contained; this Agreement and all conditions and
provisions hereof being intended to be and being for the sole and exclusive
benefit of such persons and for the benefit of no other person except that (i)
the indemnities of the Company contained in Section 8 of this Agreement shall
also be for the benefit of any person or persons who control the Initial
Purchasers within the meaning of Section 15 of the Securities Act or Section 20
of the Exchange Act and (ii) the indemnities of the Initial Purchasers contained
in Section 8 of this Agreement shall also be for the benefit of the directors of
the Company, its officers, employees and agents and any person or persons who
control the Company within the meaning of Section 15 of the Securities Act or
Section 20 of the Exchange Act. No purchaser of Notes from the Initial
Purchasers will be deemed a successor because of such purchase.

      15.   No Waiver; Modifications in Writing. No failure or delay on the part
of the Company or any Initial Purchaser in exercising any right, power or remedy
hereunder shall operate as a waiver thereof, nor shall any single or partial
exercise of any such right, power or remedy preclude any other or further
exercise thereof or the exercise of any other right, power or remedy. The
remedies provided for herein are cumulative

                                       32
<PAGE>

and are not exclusive of any remedies that may be available to the Company or
any Initial Purchaser at law or in equity or otherwise. No waiver of or consent
to any departure by the Company or any Initial Purchaser from any provision of
this Agreement shall be effective unless signed in writing by the party entitled
to the benefit thereof; provided that notice of any such waiver shall be given
to each party hereto as set forth below. Except as otherwise provided herein, no
amendment, modification or termination of any provision of this Agreement shall
be effective unless signed in writing by or on behalf of the Company and each
Initial Purchaser. Any amendment, supplement or modification of or to any
provision of this Agreement, any waiver of any provision of this Agreement, and
any consent to any departure by the Company or the Initial Purchasers from the
terms of any provision of this Agreement shall be effective only in the specific
instance and for the specific purpose for which made or given. Except where
notice is specifically required by this Agreement, no notice to or demand on the
Company in any case shall entitle the Company to any other or further notice or
demand in similar or other circumstances.

      16.   Information Supplied by the Initial Purchasers. The statements set
forth in the third paragraph, fifth sentence of the tenth paragraph and eleventh
paragraph under the heading "Plan of Distribution" constitute the only
information furnished by the Initial Purchasers to the Company for purposes of
Sections 2(a), 8(a) and 8(b) hereof.

      17.   APPLICABLE LAW. THE VALIDITY AND INTERPRETATION OF THIS AGREEMENT,
AND THE TERMS AND CONDITIONS SET FORTH HEREIN SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO
ANY PROVISIONS RELATING TO CONFLICTS OF LAW.

      18.   Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                                       33
<PAGE>

      If the foregoing correctly sets forth our understanding, please indicate
your acceptance thereof in the space provided below for that purpose, whereupon
this letter shall constitute a binding agreement among the Company and the
Initial Purchasers.

                                     Very truly yours,

                                     SYNAPTICS INCORPORATED,

                                     a Delaware corporation

                                     By: /s/Russell J. Knittel
                                         Name: Russell J. Knittel
                                         Title: Senior Vice President and Chief
                                         Executive Officer

The foregoing Agreement is hereby confirmed and accepted as of the date first
above written.

BEAR, STEARNS & CO. INC.

By:  /s/Paul S. Rosica
     Name: Paul S. Rosica

     Title: Senior Managing Director

CREDIT SUISSE FIRST BOSTON LLC

By:  /s/John Metz
     Name: John Metz

     Title: Managing Director

                                       34
<PAGE>

                                                                      Schedule 1

<TABLE>
<CAPTION>
                                                                Principal Amount
Initial Purchasers                                                  of Notes
------------------                                              ----------------
<S>                                                             <C>
Bear, Stearns & Co. Inc..................................         $ 60,000,000

Credit Suisse First Boston LLC ..........................         $ 40,000,000

    Total................................................         $100,000,000
                                                                  ============
</TABLE>
<PAGE>

                                                                      Schedule 2

Francis Lee
Shawn Day, Ph.D.
Donald Kirby
Russ Knittel
Tom Spade
David McKinnon
William Stacy, Ph.D.
Jon Stone
Clark Foy
Federico Faggin
Keith B. Greeslin
Richard L. Sanquini
W. Ronald Van Dell

                                       36
<PAGE>

                                                                       Exhibit A

                                  Subsidiaries

Synaptics International, Inc.
Synaptics (UK) Limited
Synaptics Hong Kong Limited
Synaptics Holding GmbH
Synaptics LLC
<PAGE>

                                                                       Exhibit B

                    Form of Opinion of Greenberg Traurig LLP

1. Each of the Company and Synaptics International, Inc. and Synaptics LLC (the
"Subsidiaries") has been duly organized and validly exists as a corporation or,
in the case of Synaptics LLC, a limited liability company, in good standing
under the laws of its jurisdiction of incorporation, with the corporate or
limited liability power and authority to own its properties and conduct its
business as described in or incorporated by reference into the Preliminary
Offering Memorandum and the Offering Memorandum. Each of the Company and its
Subsidiaries is duly qualified and in good standing as a foreign corporation in
each jurisdiction in which the character or location of its properties (owned,
leased or licensed) or the nature or conduct of its business makes such
qualification necessary, except for those failures to be so qualified or in good
standing that will not in the aggregate have a material adverse effect on the
condition (financial or otherwise), results of operations, business or
properties of the Company and its subsidiaries taken as a whole (a "Material
Adverse Effect").

2. The Company has an authorized capitalization as set forth in the Preliminary
Offering Memorandum and the Offering Memorandum. All of shares of Common Stock
outstanding on the date of the Offering Memorandum have been duly and validly
authorized and issued, are fully paid and non assessable, and were not issued in
violation of any preemptive right or similar rights under (i) the Company's
Certificate of Incorporation or Bylaws, (ii) the Delaware General Corporation
Law or, (iii) to the best of such counsel's knowledge, the terms or provisions
of any material document, agreement, or other instrument to which the Company is
a party. Except as described in or incorporated by reference into the Offering
Memorandum, to such counsel's knowledge, there are (i) no outstanding securities
of the Company convertible into or evidencing the right to purchase or subscribe
for any shares of capital stock of the Company, (ii) no outstanding or
authorized options, warrants, calls, subscriptions, rights, commitments, or any
other instruments or agreements of any character obligating the Company to issue
any shares of its capital stock or any securities convertible into or evidencing
the right to purchase or subscribe for any shares of such stock, and (iii) no
agreements or understandings with respect to the voting, sale or transfer of any
shares of capital stock of the Company to which the Company is a party.

3. All of the outstanding shares of capital stock or other equity securities of
each Subsidiary are owned of record and beneficially, directly or indirectly, by
the Company, free and clear of all Liens and limitations on voting rights and
are duly authorized, validly issued, fully paid and non-assessable, and have not
been issued in violation of any preemptive or similar rights under (i) the
applicable Subsidiary's organizational documents, (ii) the laws of its
jurisdiction of organization or, (iii) to the best of such counsel's knowledge,
the terms or provisions of any material document, agreement, or other instrument
to which the applicable Subsidiary is a party. Except as described in or
incorporated by reference into the Offering Memorandum, to such counsel's
knowledge, there are (i) no outstanding or authorized options, warrants, calls,
subscriptions, rights,

                                       38

<PAGE>

commitments or other instruments or agreements of any character obligating the
Company or any Subsidiary to issue any shares of capital stock of any Subsidiary
or any securities convertible into or evidencing the right to purchase or
subscribe for any shares of such stock, and (ii) no agreements or understandings
with respect to the voting, sale, or transfer of any shares of capital stock of
any Subsidiary. Except as described in or incorporated by reference into the
Offering Memorandum, to such counsel's knowledge, there are no outstanding
contractual obligations of the Company or any Subsidiary to repurchase, redeem,
or otherwise acquire any outstanding shares of capital stock or other ownership
interests of any Subsidiary or to provide funds to or make any investment (in
the form of a loan, capital contribution or otherwise) in any Subsidiary or any
other entity.

4. The Company has the corporate power and authority to execute and deliver the
Purchase Agreement and the Registration Rights Agreement and to perform its
obligations thereunder; each of the Purchase Agreement and the Registration
Rights Agreement has been duly and validly authorized, executed, and delivered
by the Company; the Registration Rights Agreement constitutes the legal, valid,
and binding obligation of the Company, enforceable in accordance with its terms,
except that the enforcement thereof may be limited by (i) bankruptcy,
insolvency, reorganization, moratorium, or other similar laws now or hereafter
in effect relating to or affecting creditors' rights generally; (ii) general
principles of equity (regardless of whether such enforcement is considered in a
proceeding at law or in equity) and (iii) as any rights to indemnity or
contribution hereunder may be limited by federal or state securities laws and
public policy considerations ((i); (ii) and (iii) collectively, the
"Enforceability Exceptions").

5. The Notes have been duly authorized by the Company and, when executed by the
Company and authenticated by the Trustee in accordance with the terms of the
Indenture and delivered to and paid for by the Initial Purchasers in accordance
with the terms of the Purchase Agreement, will be legal, valid, and binding
obligations of the Company, enforceable in accordance with their terms, except
that the enforcement thereof may be limited by the Enforceability Exceptions,
and will be entitled to the benefits of the Indenture and the Registration
Rights Agreement.

6. The Conversion Shares reserved for issuance upon conversion of the Notes have
been duly authorized and reserved and, when issued upon conversion of the Notes
in accordance with the terms of the Notes, will be validly issued, fully paid,
and non-assessable, and the issuance of the Conversion Shares will not be
subject to any preemptive or similar rights under (i) the Company's Certificate
of Incorporation or Bylaws, (ii) Delaware General Corporation Law or, (iii) to
the best of such counsel's knowledge, under the terms or provisions of any
material document, agreement, or other instrument to which the Company is a
party.

7. The Company has the corporate power and authority to execute and deliver the
Indenture and to perform its obligations thereunder; the execution, and delivery
of the Indenture has been duly and validly authorized, executed and delivered by
the Company and (assuming the due authorization, execution, and delivery by the
Trustee) constitutes a

                                       39
<PAGE>

valid and binding instrument of the Company enforceable in accordance with its
terms, except that the enforcement thereof may be limited by the Enforceability
Exceptions.

8. Each of the Indenture, the Registration Rights Agreement and the Securities
conform in all material respects to the description thereof contained in the
Offering Memorandum.

9. No consent, approval, authorization, or qualification of or with any federal
or state court, governmental agency, or body is required for the issue and sale
of the Notes and the issuance of the Conversion Shares; the execution and
delivery by the Company of the Purchase Agreement, the Registration Rights
Agreement, or the Indenture; the consummation by the Company of the transactions
contemplated thereby or the performance by the Company of its obligations
thereunder, except for (i) such as shall be obtained under the Securities Act
with respect to the Company's obligations under the Registration Rights
Agreement, (ii) such as may be required under state securities or blue sky laws
in connection with the purchase and distribution of the Securities (as to which
such counsel expresses no opinion), and (iii) such as are required by the rules
and regulations of the NASD.

10. To the best of such counsel's knowledge, there are no judicial, regulatory
or other legal or governmental proceedings pending to which the Company or any
of the Subsidiaries is a party or of which any property of the Company or the
Subsidiaries is the subject that are required to be described in the Offering
Memorandum and are not so described and, to the best of such counsel's
knowledge, no such proceedings are threatened or contemplated by governmental
authorities or threatened by others.

11. The execution and delivery by the Company of the Purchase Agreement, the
Indenture, the Registration Rights Agreement; and the Notes and the performance
by the Company of its obligations thereunder do not (A) conflict with or result
in a breach of any of the terms and provisions of, or constitute a default (or
an event which with notice or lapse of time, or both, would constitute a
default) under, or result in the creation or imposition of any lien, charge, or
encumbrance upon any property or assets of the Company or any of its
Subsidiaries pursuant to, any indenture, mortgage, deed of trust, loan
agreement, or any other agreement, instrument, franchise, license, or permit
known to such counsel to which the Company or any of its Subsidiaries is a party
or by which any of the Company or any of its Subsidiaries or their respective
properties or assets may be bound or (B) violate or conflict with any provision
of the certificate of incorporation or by-laws of the Company or any of its
Subsidiaries, or, to the best of such counsel's knowledge, any judgment, decree,
order, statute, rule, or regulation of any court or any judicial, regulatory, or
other legal or governmental agency or body.

12. Assuming (i) the representations of the Initial Purchasers and the Company
contained in the Purchase Agreement are true and correct, (ii) compliance by the
Initial Purchasers and the Company with their respective covenants set forth in
the Purchase Agreement and (iii) the accuracy of the representations and
warranties made in accordance with the Purchase Agreement and the Offering
Memorandum by purchasers to whom the Initial Purchasers initially resell the
Notes, it is not necessary in connection

                                       40
<PAGE>

with the offer, sale and delivery of the Notes to the Initial Purchasers
pursuant to the Purchase Agreement or the initial resale of the Notes by the
Initial Purchases to "qualified institutional buyers" (as such term is defined
under Rule 144A under the Securities Act), in the manner contemplated by the
Purchase Agreement and described in the Offering Memorandum, to register the
Securities under the Securities Act of 1933, as amended, or to qualify the
Indenture under the Trust Indenture Act of 1939, as amended.

13. The Company is not and, after giving effect to the offering and sale of the
Notes and the application of the proceeds thereof as described in the Offering
Memorandum, will not be required to register as an "investment company" as
defined in the Investment Company Act of 1940, as amended.

14. When the Notes are issued and delivered pursuant to the Purchase Agreement,
none of the Notes will be of the same class (within the meaning of Rule 144A
under the Securities Act) as securities of the Company that are listed on a
national securities exchange registered under Section 6 of the Exchange Act or
that are quoted in a U.S. automated inter-dealer quotation system.

15. The statements in the Offering Memorandum under the captions "Description of
Notes", "Description of Capital Stock", "Notice to Investors," "Plan of
Distribution", and "Transfer Restrictions", insofar as such statements
constitute summaries of the legal matters, documents, or proceedings referred to
therein, fairly present the information called for with respect to such legal
matters, documents, or proceedings.

16. The statements in the Offering Memorandum under the caption "Material U.S.
Federal Income Tax Considerations," insofar as such statements constitute
matters of law or legal conclusions, are correct in all material respects.

17. Each document incorporated by reference in the Offering Memorandum (except
for the financial statements and related schedules included therein as to which
such counsel need express no opinion) complied as to form when filed with the
Commission in all material respect with the Exchange Act and the rules and
regulations of the Commission promulgated thereunder.

      In addition, such opinion shall also contain a statement that such counsel
has participated in conferences with officers and representatives of the
Company, representatives of the independent auditors for the Company, and the
Initial Purchasers at which the contents of the Offering Memorandum and related
matters were discussed and, no facts have come to the attention of such counsel
that would lead such counsel to believe that Offering Memorandum (including the
documents incorporated by reference therein), as of its date (or any amendment
thereof or supplement thereto made prior to the Closing Date as of the date of
such amendment or supplement) and as of the Closing Date, contained or contains
an untrue statement of a material fact or omitted or omits to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading (it
being understood that such counsel need express no belief or opinion with
respect to the

                                       41
<PAGE>

financial statements and schedules and other financial data included or
incorporated by reference therein).

                                       42
<PAGE>

                                    Exhibit C

           Form of Legal Opinion of each of the Company's Subsidiaries

1. Each of the Company's Subsidiaries has been duly organized and validly exists
as a corporation in good standing under the laws of its jurisdiction of
incorporation, with full power and authority to own its properties and conduct
its business as described in the Preliminary Offering Memorandum and the
Offering Memorandum. Each of the Company's Subsidiaries is duly qualified and in
good standing as a foreign corporation in each jurisdiction in which the
character or location of its properties (owned, leased or licensed) or the
nature or conduct of its business makes such qualification necessary, except for
those failures to be so qualified or in good standing which will not in the
aggregate have a Material Adverse Effect.

2. All of the outstanding shares of capital stock or other equity securities of
each Subsidiary are owned of record and beneficially, directly or indirectly, by
the Company, free and clear of all Liens and limitations on voting rights and
are duly authorized, validly issued, fully paid and non-assessable, and have not
been issued in violation of any preemptive or similar rights under (i) the
applicable Subsidiary's organizational documents, (ii) the laws of its
jurisdiction of organization or, (iii) to the best of such counsel's knowledge,
the terms or provisions of any material document, agreement or other instrument
to which the applicable Subsidiary is a party. To the best of such counsel's
knowledge, there are (i) no outstanding or authorized options, warrants, calls,
subscriptions, rights, commitments or other instruments or agreements of any
character obligating the Company or any Subsidiary to issue any shares of
capital stock of any Subsidiary or any securities convertible into or evidencing
the right to purchase or subscribe for any shares of such stock, and (ii) no
agreements or understandings with respect to the voting, sale or transfer of any
shares of capital stock of any Subsidiary. To the best of such counsel's
knowledge, there are no outstanding contractual obligations of any Subsidiary to
repurchase, redeem or otherwise acquire any outstanding shares of capital stock
or other ownership interests of any Subsidiary or to provide funds to or make
any investment (in the form of a loan, capital contribution or otherwise) in any
Subsidiary or any other entity.

3. To the best of such counsel's knowledge, other than as set forth in the
Offering Memorandum, there are no judicial, regulatory or other legal or
governmental proceedings pending to which any of the Company's Subsidiaries is a
party or of which any property of the Subsidiaries is the subject that are
required to be described in the Offering Memorandum and are not so described
and, to the best of such counsel's knowledge, no such proceedings are threatened
or contemplated by governmental authorities or threatened by others

                                       43
<PAGE>

                                    Exhibit D

                  Form of Comfort Letter from Ernst & Young LLP

                                       44
<PAGE>

                                    Exhibit E

                            Form of Lock-Up Agreement

                               November ___, 2004

Bear, Stearns & Co. Inc.
Credit Suisse First Boston LLC
c/o Bear, Stearns & Co. Inc.
383 Madison Avenue
New York, New York 10179
Attention: Equity Capital Markets

                    Synaptics Incorporated Lock-Up Agreement

Ladies and Gentlemen:

      This letter agreement (this "Agreement") relates to the proposed offering
(the "Offering") by Synaptics Incorporated, a Delaware corporation (the
"Company"), of its convertible senior subordinated notes (the "Notes") in an
aggregate principal amount of up to $115 million (including the Initial
Purchasers' option).

      In order to induce you (the "Initial Purchasers") to purchase Notes in the
Offering, the undersigned hereby agrees that, without the prior written consent
of Bear, Stearns & Co. Inc. and Credit Suisse First Boston LLC, during the
period from the date hereof until sixty (60) days from the date of the final
offering memorandum for the Offering (the "Lock-Up Period"), the undersigned (a)
will not, directly or indirectly, offer, sell, agree to offer or sell, solicit
offers to purchase, grant any call option or purchase any put option with
respect to, pledge, borrow or otherwise dispose of any Relevant Security (as
defined below), and (b) will not establish or increase any "put equivalent
position" or liquidate or decrease any "call equivalent position" with respect
to any Relevant Security (in each case within the meaning of Section 16 of the
Securities Exchange Act of 1934, as amended, and the rules and regulations
promulgated thereunder), or otherwise enter into any swap, derivative or other
transaction or arrangement that transfers to another, in whole or in part, any
economic consequence of ownership of a Relevant Security, whether or not such
transaction is to be settled by delivery of Relevant Securities, other
securities, cash or other consideration. As used herein "Relevant Security"
means the common stock, par value $0.001 per share (the "Common Stock"), of the
Company and any other equity security of the Company or any of its subsidiaries
and any security convertible into, or exercisable or exchangeable for, any
Common Stock or other such equity security.

      After the initial date of delivery of the Notes, the foregoing
restrictions shall not apply to the disposition of up to an aggregate of 10,000
shares of Common Stock that may be sold by the Company's officers and directors,
provided that the Chief Executive Officer of the Company shall determine, in his
sole discretion, (i) which officers and directors shall

                                       45
<PAGE>

be entitled to sell shares in accordance with the foregoing limitation, and (ii)
the number of shares that each such officer or director shall be entitled to
sell. [In addition, after the date of the final offering memorandum, the
foregoing restrictions shall exclude shares of Common Stock that may continue to
be sold or otherwise disposed of by the undersigned pursuant to a preexisting
Rule 10b5-1 Trading Plan entered into on [________].](1)

      The undersigned hereby authorizes the Company during the Lock-Up Period to
cause any transfer agent for the Relevant Securities to decline to transfer, and
to note stop transfer restrictions on the stock register and other records
relating to, Relevant Securities for which the undersigned is the record holder
and, in the case of Relevant Securities for which the undersigned is the
beneficial but not the record holder, agrees during the Lock-Up Period to cause
the record holder to cause the relevant transfer agent to decline to transfer,
and to note stop transfer restrictions on the stock register and other records
relating to, such Relevant Securities. The undersigned hereby further agrees
that, without the prior written consent of Bear, Stearns & Co. Inc. and Credit
Suisse First Boston LLC, during the Lock-up Period the undersigned (x) will not
file or participate in the filing with the Securities and Exchange Commission of
any registration statement (except for the registration statement pursuant to
that certain Registration Rights Agreement among the Company and the Initial
Purchasers dated as of the initial date of delivery of the Notes), or circulate
or participate in the circulation of any preliminary or final prospectus or
other disclosure document with respect to any proposed offering or sale of a
Relevant Security and (y) will not exercise any rights the undersigned may have
to require registration with the Securities and Exchange Commission of any
proposed offering or sale of a Relevant Security.

      The undersigned hereby represents and warrants that the undersigned has
full power and authority to enter into this Agreement and that this Agreement
constitutes the legal, valid and binding obligation of the undersigned,
enforceable in accordance with its terms. Upon request, the undersigned will
execute any additional documents necessary in connection with enforcement
hereof. Any obligations of the undersigned shall be binding upon the successors
and assigns of the undersigned from the date first above written.

      This Agreement shall be governed by and construed in accordance with the
laws of the State of New York. Delivery of a signed copy of this letter by
facsimile transmission shall be effective as delivery of the original hereof.

                                     Very truly yours,

                                     By:  ______________________________________

                                     Print Name: _______________________________

---------------------
(1) To be included for the officers and directors that have a preexisting Rule
    10b5-1 Trading Plan.

                                       46

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