<PAGE>

                                                                   EXHIBIT 10.18


                         [LOGO OF GENERAL INSTRUMENT]



                            C 0 N F I D E N T I A L
                            -----------------------



                        DEVELOPMENT AND SUPPLY AGREEMENT


                                 by and between

                                MICROTUNE, INC.

                                      and


                         General Instrument Corporation


                                 June 14, 2000
<PAGE>

     DEVELOPMENT AND SUPPLY AGREEMENT dated this 14 day of June, 2000 by and
between GENERAL INSTRUMENT CORPORATION, a Delaware corporation doing business as
the Broadband Communications Sector of Motorola, Inc.  and having an office at
101 Tournament Drive, Horsham, PA 19044 ("Buyer"), and MICROTUNE, INC., a Texas
corporation with its principal place of business at 2540 East Plano Parkway,
Suite 188, Plano, Texas 75074 ("Seller" and collectively with the Buyer, the
"Parties").

W I T N E S S E T H:
-------------------

     WHEREAS,  Seller has expertise in developing and manufacturing RF tuner
devices which may be used in a variety of broadband communication applications,
including cable modem, set top box and IP telephony products; and

     WHEREAS, Buyer desires to have Seller develop and manufacture for Buyer,
and Seller is willing to develop and manufacture for Buyer, and Buyer desires to
purchase from Seller, RF tuner modules for Buyer's cable modem, set top box and
IP telephony products; and

     WHEREAS, it is the intention of both parties to establish a strategic
alliance pursuant to which Seller is a preferred RF tuner supplier for Buyer and
Buyer is a strategic customer of Seller;

     NOW, THEREFORE, in consideration of the premises and mutual covenants set
forth in this Agreement, the parties, intending to be legally bound, agree as
follows:

ARTICLE 1.  DEFINITIONS

     All defined terms used herein but not otherwise defined shall have the
meanings set forth in Exhibit A.

ARTICLE 2.  DEVELOPMENT OF PRODUCTS

2.1  Development Program

     (a)  The Parties shall establish a development program (the "Development
          Program") for the development of silicon tuners (the "Silicon Tuners")
          in accordance with the terms of the letter agreement dated the date
          hereof by and between Seller and Buyer (the "Development Agreement"),
          a copy of which is attached as Exhibit B hereto.

     (b)  Buyer will make engineering resources available on a reasonable basis
          to work with Seller to qualify the ***** Microtune RF tuner
          module (together with Seller's *****, the "RF Tuner
          Modules") into Buyer's Surfboard cable modem line, with the initial
          focus to target DOCSIS qualification ***** of Seller's tuner
          module in the SB4100 product during *****.

     (c)  Buyer will make engineering resources available on a reasonable basis
          to work with Seller to develop RF tuner modules for Buyer's set top
          and IP telephony DOCSIS applications.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

<PAGE>

     (d)  Buyer will make engineering and procurement resources available on a
          reasonable basis to evaluate the technical and commercial feasibility
          of designing in the Seller solution for Analog video RF tuners. Buyer
          shall also provide to Seller its specifications required to meet the
          performance of the current analog tuner in production in the *****
          by *****.


2.2  Delivery and Acceptance of Development  Products

  After the release of the Silicon Tuners  for commercial production in
accordance with the Development Agreement, the Silicon Tuners shall become
Products which may be purchased and sold pursuant to this Agreement. After the
qualification of the ***** Microtune RF tuner module into Buyer's
Surfboard cable modem line, the ***** Microtune RF tuner module shall
become a Product which may be purchased and sold pursuant to this Agreement.

ARTICLE 3.  PURCHASE AND SALE OF PRODUCTS

3.1  Right to Purchase.

     (a) Buyer agrees to purchase and Seller agrees to sell, in such quantities
and at such prices as are set forth in Sections 3.10 and 6.5 and in purchase
orders or releases ("Orders") received and accepted (or deemed accepted, as
provided in Section 3.1(c) hereof) by Seller and as provided hereunder, the
products specified in Exhibit C (the "Products") Orders for the Products may be
placed by any of the divisions, subsidiaries and affiliates of Buyer listed on
Exhibit D hereto (each hereinafter considered to be a "Buyer" for purposes of
this Agreement) which may be amended by Buyer at any time to include additional
locations for such divisions, subdivisions and affiliates.

     (b) Subject to Section 3.3, nothing contained in this Agreement shall
restrict Buyer from purchasing Products, or components thereof, from other
suppliers.

     (c) For purposes of this Agreement any Order for a Product within the lead
time for such Product as set forth in Exhibit C and which is for a quantity of
such Product which does not exceed the lesser of (i), after taking into account
any other Products ordered by Buyer at the same time, ***** of the total
quantity of RF tuner modules utilizing the ***** that Seller's manufacturing
facilities are capable of producing and (ii) the amount of such Product
forecasted to be ordered in the most recent Rolling Forecast for the period in
which such Order is placed, may not be rejected by Seller and shall be deemed
accepted for all purposes of this Agreement, regardless of whether accepted or
acknowledged by Seller.

3.2  Content of Orders (Terms and Conditions); Acknowledgment.

     (a) Buyer shall issue Orders for Products Buyer elects to purchase in
accordance with the lead times set forth in Exhibit C and the other terms of
this Agreement.

     (b) All sales shall be pursuant to the "Terms of Purchase" attached hereto
as Exhibit E and incorporated herein by reference (the "Terms of Purchase"). In
the event of a conflict between the terms and conditions contained in this
Agreement and the Exhibits

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       2

<PAGE>

attached hereto, on the one hand, and Buyer's standard terms and conditions of
purchase and any Order or any acknowledgement or acceptance by Seller, on the
other hand, the terms and conditions contained in this Agreement and the
Exhibits attached hereto shall control. The parties acknowledge that the
preprinted provisions on the reverse side of any such Order, quotation, release,
acknowledgment or invoice shall be deemed deleted.

3.3  Forecasts.

     Buyer will provide Seller with a written twelve (12) month forecast (the
"Rolling Forecast") of its anticipated orders of Products, broken down on a
monthly basis. Buyer's Rolling Forecasts shall constitute good faith estimates
on the part of the Buyer and Buyer shall not be obligated to purchase any
quantities estimated in a Rolling Forecast; provided, that Buyer shall be
obligated  to purchase quantities of the Products as set forth in an Order
(including any modified Order pursuant to Section 3.8) and as may be required by
operation of the provisions of Section 3.10.

3.4  ***** to Purchase Minimum Amount.

  Except as otherwise expressly set forth in this Agreement (including without
limitation in Section 3.10), this Agreement is a ***** contract and Products
shall be manufactured, purchased and sold *****.

3.5  Reports.

  Seller, at Buyer's reasonable request, shall issue reports on the status of
open Orders.  Seller shall provide such other information as Buyer may
reasonably request from time to time.

3.6  Time is of the Essence

  Time is of the essence with respect to all Orders placed under this Agreement.

3.7  Purchase Agreement Coordinators.

  To facilitate implementation of this Agreement, Buyer and Seller designate the
individuals listed on Exhibit F as their  "Purchase Agreement Coordinators". The
respective Purchase Agreement Coordinators are authorized to act on behalf of
Seller and Buyer under this Agreement.

3.8  Quantity Increases and Shipment Schedule Changes.

  For any accepted Order, Buyer may (i) increase the quantity of Products or
(ii) reschedule the quantity of Products and their shipment date as provided in
the table below:

    Maximum Allowable Variance From Purchase Order Quantities/Shipment Dates
    ------------------------------------------------------------------------

        # of days before     Allowable     Maximum     Maximum
        Shipment Date         Quantity   Reschedule   Reschedule
        on Purchase Order    Increases    Quantity      Period
        -------------------  ----------  -----------  ----------
          0-30                *****       *****        *****
          31-60               *****       *****        ***** days

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       3
<PAGE>

<TABLE>
<CAPTION>

        <S>                  <C>         <C>          <C>
          61-90               *****       *****        ***** days
          91-120              *****       *****        ***** days
          121                 *****       *****        ***** days
</TABLE>

Any Order quantities increased or rescheduled pursuant to this Section may not
be subsequently increased or rescheduled without the prior written approval of
Seller. All other changes in quantity or shipment date require Seller's prior
written consent and shall be subject to an inventory carrying charge of *****
per month for finished Product, and Inventory and Approved Special Inventory
procured to support the original schedule. Allowable quantity increases are
subject to material availability. Seller will use reasonable commercial efforts
to meet quantity increases. If there are extra costs to meet a schedule increase
in excess of the above limits, Seller will inform Buyer in advance of incurring
such extra costs in order to provide Buyer an opportunity to approve such extra
costs (and Buyer shall have no obligation with respect to any such extra costs
not approved by Buyer in writing) or to revise the schedule to avoid such extra
costs. Buyer and Seller agree to mutually review and revise the terms of this
Section for the Silicon Tuners.

3.9  Cancellation.

     Except as provided in Sections 3.10 and 6.5 below, Buyer shall be entitled
to cancel any Order, or any portion of an Order, by giving Seller written notice
of such cancellation. The cancellation shall be effective immediately upon
receipt of the notice by Seller. Should Buyer cancel any Order, or any portion
of any Order, for any reason not otherwise permissible under the terms of this
Agreement, Buyer's sole liability and responsibility and the sole remedy of
Seller with respect to such cancellation shall be payment by Buyer of a
cancellation charge, which shall consist of the following:

          (i)  the contract price for all Product in a finished goods state at
     the time of cancellation, limited to that quantity of the Product that was
     scheduled under the cancelled Order for delivery within the next *****
     days;

          (ii) the cost of all Inventory required for the cancelled Products and
     for which Seller is liable at the time of cancellation, whether on order,
     or on hand in raw form or in the form of work-in-process, which cannot be
     cancelled, returned to vendors or used for other customers, less salvage
     value.

3.10  Special Purchase Arrangements

      (a)  Subject to the following provisions of this Section 3.10(a), Buyer
agrees to purchase from Seller on a nonchangeable and noncancellable basis, and
Seller agrees to sell to Buyer, the following quantities of ***** for delivery
during the following calendar quarters:

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------------------
                 Calendar Quarter                                    Aggregate Quantity
--------------------------------------------------------------------------------------------------------
<S>                                                 <C>
        4Q 2000                                             *****
--------------------------------------------------------------------------------------------------------
        1Q 2001                                             *****
--------------------------------------------------------------------------------------------------------
        2Q 2001                                             *****
--------------------------------------------------------------------------------------------------------
</TABLE>

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       4
<PAGE>

The mix of the Products to be purchased and sold, which may consist of any
combination of ***** at Buyer's sole discretion, and the delivery dates within
such calendar quarters for such Products shall be determined by Orders submitted
by Buyer in accordance with the provisions of this Agreement. In the event that
Buyer submits Orders for the delivery of Products in excess of the amounts set
forth above for such calendar quarters, Seller shall use all commercially
reasonable efforts to accept and fill such Orders, but Seller shall have no
obligation to allocate any production capacity required by Seller's other
customers to satisfy such excess amounts requested by Buyer. Buyer's obligation
to submit such Orders and to purchase such Products are subject to the Seller's
satisfaction of the following minimum technology, quality, delivery, and other
performance and cost criteria with respect to each Product:

          (i)  technology: product compliance with the product specific
               functional specifications referred to in Exhibit G; product is
               DOCSIS certifiable; product passes Buyer's qualification testing.
               The current tuner specification is General Instrument *****
               specification ***** and General Instrument ***** specification
               *****. Both parties acknowledge that Seller's current product,
               the *****, conforms to the ***** specification and the *****
               conforms to the ***** specification, *****. Further, if any parts
               of Buyer's specifications are waived or deviated by Buyer for any
               other tuner supplier, those same parts of the specifications
               shall be waived or deviated for Seller. The Seller will be
               notified in a timely manner of any such waivers or deviations.

          (ii) quality: product quality meets minimum quality standards set in
               product specification; product failure rate in production
               decreases in accordance with a mutually acceptable minimum
               learning curve.

         (iii) delivery: product is available in the quantities set forth in
               Buyer's Rolling Forecasts (not exceeding ***** of the total
               quantity of RF tuner modules utilizing the ***** which Seller's
               manufacturing facilities are capable of manufacturing) and within
               the time schedule set forth in Buyer's Rolling Forecasts as
               specified in this Agreement.

          (iv) cost:  product meets or exceeds the cost learning curve as
               specified in Exhibit C.


(b)  Buyer shall have no obligation to submit Orders for the delivery of
     Products on or after *****, except as set forth in this Section 3.10(b). On
     or before *****, Buyer may send to Seller a proposal referring to this
     Section (the "Buyer's Proposal") to order Products at a specified price for
     delivery during the *****. Seller may accept Buyer's Proposal by a written
     acceptance (the "Seller's Acceptance") delivered to Buyer within *****
     after Seller's receipt of the Buyer's Notice. In the event that Seller has
     timely provided the Seller's Acceptance to Buyer, Buyer shall be obligated
     to submit to Seller, and Seller shall be obligated to accept, Orders in
     accordance with the terms

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       5
<PAGE>

of this Agreement for any combination of qualified DOCSIS and EuroDOCSIS RF
tuner modules which represents an aggregate amount of at least ***** of the
total aggregate quantity of qualified DOSCIS and EuroDOCSIS RF Tuner Modules
that Buyer orders from all suppliers for Buyer's cable modem, IP telephony, and
set top products concerning which Seller has a qualified Product, subject to the
Seller's satisfaction of the minimum technology, quality, delivery, and other
performance and cost criteria described in (i) through (iv) of Section 3.10(a)
or as otherwise agreed in writing with respect to each Product.

3.11  Most Favored Customer

      Buyer will receive pricing terms on any and all of Seller's products,
including the Products, which are *****. Seller shall also make available for
purchase by Buyer on such terms any and all new products developed by Seller.

ARTICLE 4.  TERM AND TERMINATION

4.1  Term.

      The term of this Agreement shall commence on the date hereof and shall
continue until *****, subject to earlier termination pursuant to Section 4.2
hereof. Unless otherwise terminated by either party by written notice at *****
days prior to the expiration of the term, this Agreement shall renew for
additional ***** periods.

4.2  Termination.

      Buyer or Seller may terminate this Agreement at any time if (i) the other
party has breached any provision hereof, including, without limitation, any
representation or warranty contained herein where the breaching Party fails to
cure such breach within thirty (30) days following receipt of notice of such
breach from the non-breaching Party; or (ii) either Party making an assignment
for the benefit of creditors, or if a receiver, trustee in bankruptcy or similar
officer shall be appointed to take charge of any and all of the other parties
property, or if the other Party files a petition for reorganization of its
indebtedness or other similar activities

4.3  Effect of Termination.

      Termination of this Agreement for any reason shall not affect the
obligations of either party that exist as of the date of termination.

ARTICLE 5.  PRICES AND PAYMENT

5.1  Prices; Shipping.

      The purchase prices for the Products are set forth in Exhibit C and are
subject to adjustment as hereinafter provided.

5.2  Payment of Invoices.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       6
<PAGE>

      Buyer's payment of any invoice shall not constitute acceptance of the
Products related to such invoice.

                                       7
<PAGE>

5.3  Delivery of Invoices.

All invoices shall reference this Agreement and shall be submitted to Buyer at:

     Motorola, Inc.
     101 Tournament Drive
     Horsham, Pennsylvania 19044
     Attention:  Accounts Payable

With a copy to Buyer's designated Purchase Agreement Coordinator listed in
Exhibit F. All invoices shall contain such information as Buyer shall reasonably
request.

5.4  Payment Terms.

      Payment for a conforming Product shall be due (i) for invoices received by
Buyer prior to the first anniversary of the date of this Agreement, within *****
days after Buyer's receipt of the invoice and (ii) for invoices received by
Buyer after the first anniversary of the date of this Agreement, within *****
days after Buyer's receipt of the invoice. Payments shall be made in lawful U.S.
currency.

ARTICLE 6.  MANUFACTURING OF PRODUCTS

6.1  Specifications and Drawings.

      On or before the date of this Agreement, Buyer shall have delivered to
Seller all information and documentation necessary to permit Seller to perform
its obligations under this Agreement. Such information includes, but is not
limited to the information listed in Exhibit G. All Products will be
manufactured in accordance with the Specifications (see Section 3.10(i)). Seller
shall make no change to the Specifications, to any materials or component parts
described therein, or to the Products, including, without limitation, changes in
form, fit, function, design, appearance or place of manufacture of the Products
or changes which would affect the reliability of any of the Products, without
Buyer's express written consent obtained in accordance with the "Product/Process
Change Request Notification" procedure ***** found in Exhibit K.

6.2  Initial Qualification.

      Prior to the commercial production of any of the Products, the Products
and components thereof shall be qualified in accordance with the acceptance test
procedures and qualification plans set forth in Exhibit I, and Exhibit . The
methods of testing for the qualification of the Products and components thereof,
and the timetable for the qualification of the Products, shall be as set forth
in Exhibit I or as otherwise agreed to between the parties. The current tuner
specification is General Instrument ***** specification ***** and General
Instrument ***** specification *****. Both parties acknowledge that, *****,
Seller's current products, the *****, have been qualified in accordance with the
acceptance test procedures and qualification plans set forth in Exhibit I, and
Exhibit K.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       8
<PAGE>

6.3  Manufacturing Location; Restriction on Subcontracting.

      Seller shall initially manufacture the Products, which are RF tuner
modules, at Seller's facilities in Manila, Philippines ("Seller's Facility").
The Products shall not be manufactured for Buyer by any person or entity other
than Seller, without Buyer's express written consent, which shall not be
unreasonably withheld. Buyer reserves the right to audit and approve any
contract manufacturer or alternate location Seller proposes to manufacture
Products. The Silicon Tuners may be manufactured at locations other than Manila
which are mutually acceptable to Seller and Buyer. As of the date of this
Agreement, Buyer acknowledges that IBM's facilities in Burlington, Vermont and
***** facilities in ***** are acceptable facilities for wafer fabrication,
Amkor/Anam's facilities in Korea and the Philippines are acceptable facilities
for assembly and testing, Seller's facilities in Plano for testing and any
facilities currently used for fabrication, assembly or testing by Motorola's
Semiconductor Division are acceptable facilities for fabrication, assembly or
testing.

6.4  Material Procurement.

     (a) Seller shall purchase materials to manufacture Products necessary to
comply with its obligations to supply Products specified in Exhibit C.  Seller
shall use in its production of Products such parts and components of a type,
quality, and grade as were used in the Products when they were initially
qualified under this Agreement.  Seller shall make no substitution of any
components, raw materials or vendors which would affect the reliability of the
Products without Buyer's written consent.  In the event such substitution is
requested by Seller, Seller shall provide documented evidence of the
qualification of such components, raw materials or vendors in accordance with
Buyer's Component Qualification Procedures identified in Exhibit K.  Seller
shall not use materials with date codes older than one (1) year without Buyer's
consent.

     (b) Buyer's accepted Orders will constitute authorization for Seller to
procure, using the purchasing practices set forth in this Agreement, the
components, materials and supplies necessary for the manufacture of Products
("Inventory") covered by such purchase orders.

     (c) In addition, Buyer may authorize Seller to purchase, in amounts beyond
the amount necessary to fill accepted Orders, the components, materials, and
supplies: (i) with lead times greater than ***** days at the time the Order is
placed ("Long Lead Time Components") plus ***** days to account for the order,
shipment, receipt and manufacturing time and, (ii) purchased in quantities above
the required amount in order to achieve price targets ("Economic Order
Inventory"), and (iii) purchased in excess of requirements because of minimum
lot sizes available from manufacturers ("Minimum Order Inventory"). Together
these are called "Special Inventory". Seller shall notify Buyer's Purchaser
Representative of its intent to Purchase Special Inventory at least ***** days
prior to such purchase. Such notice shall contain a detailed identification of
the Special Inventory to be purchased, the proposed purchase price, the vendor
supplying the Special Inventory, and a reference to Buyer's obligations under
this Section. During the ***** day period, Buyer shall notify Seller whether or
not the purchase of such Special Inventory is authorized. In the event Buyer
notifies Seller that Seller is authorized to purchase such Special Inventory,
the Special Inventory shall be considered to be "Approved Special Inventory" for
purposes of this Agreement. In the event Buyer does not so notify Seller, Seller
shall consider the purchase of the Special Inventory not

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       9
<PAGE>

to be authorized by Buyer and such Special Inventory shall not be considered
"Approved Special Inventory" for any purpose of this Agreement.

     (d) Seller may purchase Long Lead Time Components sufficient to meet all
deliveries under the Orders in effect at the time the order with the supplier is
placed, and may reasonably purchase Minimum Order Inventory even if greater than
the amount necessary to meet Orders and Product forecast, in each case only if
authorized by Buyer as set forth in Section 6.4(c) above.  Seller may, from time
to time, at the written request of Buyer hold Long Lead Time Components and
finished Products in inventory to increase Buyer's sourcing flexibility in
amounts authorized by Buyer and at the expense of Buyer.  The components and
quantities of all such inventory will be documented in a separate letter and
signed by both Seller and Buyer.

     (e) Buyer will be responsible for all Approved Special Inventory purchased
by Seller under this Section 6.4 if such purchases are authorized by Buyer
pursuant to this Section 6.4.  Seller shall be responsible for any Special
Inventory not approved by Buyer and all other Inventory.

6.5  ALLOCATION OF PRODUCTION CAPACITY

     Throughout the term of this Agreement, Seller shall make available for
purchase by Buyer at least ***** of the total quantity of RF tuner modules
utilizing the ***** its manufacturing facilities are capable of producing within
Seller's historical lead times for the production of such products. Without
limiting the general nature of Seller's foregoing obligation to allocate its
manufacturing capacity, in no event shall the quantity of RF tuner modules
utilizing the ***** available for purchase by Buyer be less than the following
amounts during the following periods:

  Time Period          Minimum Quantity
  -----------          ----------------

  4/1/00 to 6/30/00        *****

  7/1/00 to 9/30/00        *****

Seller will use all commercially reasonable efforts to supply an additional
***** RF Tuner Modules  to Buyer during the months of *****.

Buyer agrees to pay Seller a unit price of ***** for delivery of Products from
the period of *****. During the ***** and any period in which Buyer requires at
least ***** of Seller's manufacturing capacity in accordance with this
Agreement, Buyer's Orders shall be noncancelable, but may be modified in
accordance with the provisions of Section 3.8.

ARTICLE 7.  EXCLUSIVE PRODUCTS; LICENSES

7.1  Exclusive Products.

      Seller shall not sell any Products incorporating Buyer's Technology to any
other party during or after the term of this Agreement.  For avoidance of doubt,
Seller represents that it will

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       10
<PAGE>

not be necessary to, and that it will not, incorporate Buyer's Technology into
any Product hereunder.

7.2  Proprietary Rights.

      Seller hereby confirms that Buyer has and shall retain the sole right,
title, and interest in and to all proprietary rights in Buyer's Intellectual
Property, including all patents, patent applications, copyrights, trade secrets
or other proprietary rights relating to or embodied therein, including all
documentation, methods, processes, software, and information relating to or
embodied therein ("Buyer's Technology"). Buyer hereby confirms that Seller has
and shall retain the sole right, title, and interest in and to all proprietary
rights in Seller's Products and Seller's Intellectual Property, including all
patents, patent applications, copyrights, trade secrets or other proprietary
rights relating to or embodied therein, including all documentation, methods,
processes, software, and information relating to or embodied therein ("Seller's
Technology").

7.3 Transactions With Other Parties.

      Subject to the provisions of Section 7.1, Seller shall have the right to
separately manufacture and sell to others products which are comparable to the
Products.  Nothing contained in this Section 7.3 shall permit Seller to use any
proprietary information or rights of Buyer, including, without limitation,
Buyer's Technology for that purpose or for the purpose of designing or
developing products.

ARTICLE 8.  CONFIDENTIALITY

      The terms and conditions of the Non-Disclosure Agreement (the "NDA")
attached hereto as Exhibit H are incorporated herein by reference as if the
entire NDA were set forth herein with the exception that the term of the NDA
shall extend for the term of this Agreement, provided that any termination of
the this Agreement shall not relieve either party from its obligations imposed
by this Agreement with respect to nondisclosure, confidentiality and use of the
Confidential Information disclosed prior to the date of termination.  The
obligations imposed upon the parties under this Agreement shall continue for a
period of ***** years after the receipt of the Confidential Information.

ARTICLE 9. EXCUSED PERFORMANCE

      A party shall be excused from performing an obligation under this
Agreement and shall not be considered in default to the extent such party's
performance has been prevented, in whole or in part, by (i) an act of Force
Majeure (as defined below), or (ii) the non-performance of any other party to
this Agreement; provided, however, that a party shall not be so excused from the
performance of its obligations under this Agreement to the extent that the other
party's non-performance is attributable to the party seeking to be excused from
the performance of its obligations under this Agreement failing to perform its
obligations under this Agreement. "Force Majeure" shall mean, without
limitation, (a) any act of God, war, riot, fire, rupture, explosion, flood,
strike, injunction, governmental action, inaction, or order, transportation
failures, unavailability of materials, supplies or energy, or unscheduled outage
or shut-down, (b) any lockout or other labor disturbance, even if such lockout
or disturbance is within the power of a party to settle, or (c) any other cause,
whether similar or dissimilar to the foregoing, which is beyond the reasonable
control of a party (or any affiliate of such party) claiming Force Majeure

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       11
<PAGE>

interference with the performance of such party under this Agreement. Upon the
occurrence of Force Majeure, the obligations of the party whose performance has
not been affected shall be suspended and such party shall have the rights
available to it under the Uniform Commercial Code.

ARTICLE 10.  AGREEMENT

     This Agreement, the Exhibits and all Orders issued hereunder constitute the
final written expression of all terms of the Agreement relating to the
transactions described herein.  This Agreement supersedes all previous
communications, representations, agreements, promises or statements, either oral
or written, with respect to such transactions.  No addition to or modification
of any provision of this Agreement will be binding unless made in writing.

ARTICLE 11.  GOVERNING LAW

     The rights and obligations of the parties under this Agreement shall be
governed and determined according to the substantive laws of the State of
California (excluding the conflict of laws principles thereof).

ARTICLE 12.  PUBLICITY

     Buyer and Seller will issue a joint press release announcing the
relationship, including development of the single chip silicon tuner, upon
execution of this Agreement and prior to the marketing of initial public
offering of Microtune securities. In addition, Buyer acknowledges that Seller
may be required to file a copy of this Agreement with the Securities and
Exchange Commission. In connection with such filing, Seller shall make an
initial request for confidential treatment for any of the terms of this
Agreement designated by Buyer. In responding to any comments made or positions
taken by the Securities and Exchange Commission with respect to Seller's request
for confidential treatment, Seller shall notify Buyer of such comments or
positions and, to the extent the procedures of the Securities and Exchange
Commission provide it an opportunity to do so, shall use commercially reasonable
efforts to obtain confidential treatment for the terms of this Agreement
designated by Buyer, but shall have no obligation to Buyer if the Securities and
Exchange Commission ultimately declines to provide such confidential treatment
to the terms designated by Buyer.

                    [REMAINDER OF PAGE INTENTIONALLY BLANK]

                                      12
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date and year first above written.


Buyer:              Seller:

GENERAL INSTRUMENT CORPORATION    MICROTUNE, INC.



By: /s/ Keith Jones                          By: /s/ Douglas J. Bartek
  ----------------------------------           -----------------------------

Name:  Keith C. Jones                        Name:  Douglas J. Bartek
    --------------------------------         Title: CEO and Chairman
Title: V.P. & Director, Supply Mgmt          Date:  June 14, 2000
     -------------------------------             ---------------------------
Date:  June 14, 2000
    --------------------------------

                                       13
<PAGE>

                                   EXHIBIT A

                                  DEFINITIONS


     "Business Day" means a day other than a Saturday, Sunday, Holiday or other
day on which commercial banks located in Philadelphia, Pennsylvania or Dallas,
Texas are obligated or authorized by law to close.

     "Buyer's Designated Warehouse" means each of those warehouses designated by
Buyer which are set forth on Exhibit D hereto.

     "Confidential Information" has the meaning referred to in the NDA.

     "Critical Defect" means a Defect that might reasonably be expected to
endanger life or be a hazard to health, including, but not limited to, Defects
that might give an electric shock or create a fire hazard.

     "Defect" means  any malfunction of a Product, or any adverse deviation of a
Product  from the Specifications.


     "Field Rejection Rate" means, with respect to a Product, the percentage of
units of such Product delivered to Buyer since the commencement of this
Agreement which (i) have a Critical Defect or a Major Defect discovered prior to
or upon installation of the Product by Buyer's customer, or (ii) have been
returned to Seller for warranty repair under this Agreement. A Critical Defect
or Major Defect arising solely from a defect in design furnished by Buyer shall
not be included in the calculation of Field Rejection Rate.

     "Buyer's Intellectual Property" means all of Buyer's technology,
techniques, software, proprietary databases, patents, copyrights, mask works,
trade secrets and practices, Buyer's Know-how, methods, specifications, designs,
design elements and all other intellectual property provided or disclosed to
Seller by Buyer in the course of the parties' transactions under, or in
contemplation of, this Agreement.

     "Seller's Intellectual Property" means all of Seller's technology,
techniques, software, proprietary databases, patents, copyrights, mask works,
trade secrets and practices, Sellers Know-how, methods, specifications, designs,
design elements and all other intellectual property provided or disclosed to
Buyer by Seller in the course of the parties' transactions under, or in
contemplation of, this Agreement.

     "Buyer's Know-how" means all information and data not generally known
(including formulae, procedures, protocols, techniques and results of
experimentation and testing) which are necessary or useful to make the Products,
which is owned by or licensed to Buyer and which has been disclosed by Buyer to
Seller prior to or during the term of this Agreement; all to the extent and only
to the extent that Buyer now has or hereafter will have the right to grant
licenses, immunities or other rights thereunder.
<PAGE>

     "Seller's Know-how" means all information and data not generally known
(including formulae, procedures, protocols, techniques and results of
experimentation and testing) which are necessary or useful to make the Products,
which is owned by or licensed to Seller independent of Buyer.

     "Major Defect" means a Defect that causes a unit of a Product to be
functionally inoperative, materially unusable, or unable to meet the
Specifications in any material respect.  No Product shall be considered to have
a Major Defect if a Major Defect cannot be detected after the return of the
Product to Seller pursuant to mutually acceptable testing procedures.

     "Minor Defect" means a Defect that does not reduce the reliability or
usability of a unit or Product.

     "Products" means all products listed in Exhibit C attached hereto, as such
exhibit may be amended from time to time, and any portion(s) of any of such
Products, and in any subsequent Exhibits as hereafter mutually agreed upon and
attached hereto and made a part hereof, as the context may require.
"Specifications" means the specifications, drawings and technical information
attached or referenced to in Exhibit G hereto, (including, without limitation,
General Instrument ***** specification ***** and General Instrument *****
specification *****) as such exhibit may be revised by Buyer from time to time,
as well as all supplementary specifications and related documents which Buyer
may provide to Seller from time to time and which are designated as part of the
Specifications covered by this Agreement.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT B

                             DEVELOPMENT AGREEMENT

     DEVELOPMENT AGREEMENT dated as of the 14 day of June, 2000 by and between
GENERAL INSTRUMENT CORPORATION, a Delaware corporation doing business as the
Broadband Communications Sector of Motorola, Inc.  and having an office at 101
Tournament Drive, Horsham, PA 19044 ("Buyer"), and MICROTUNE, INC., a Texas
corporation with its principal place of business at 2540 East Plano Parkway,
Suite 188, Plano, Texas 75074 ("Seller" and collectively with the Buyer, the
"Parties").


                                   Background

     Buyer and Seller are parties to a Development and Supply Agreement dated
the date hereof (the "Purchase Agreement"). This is the Development Agreement
referred to in the Purchase Agreement.

                                   Agreement

     NOW, THEREFORE, the parties hereto, intending to be legally bound, hereby
agree as follows:


1.0  Silicon Tuner Program.   Buyer will provide technical guidance to Seller on
     the development of a single chip silicon tuner, providing access to Buyer's
     engineering resources as defined below:

        1.1  Seller will provide a confidential copy of the silicon tuner
             product specification to Buyer no later than *****.

        1.2  Buyer will review and provide feedback on all specifications within
             ***** of receiving the specification.

        1.3  Seller will use commercially reasonable efforts to incorporate
             Buyer's feedback to the final specification, which shall be
             delivered to Buyer no later than ***** after receipt by Seller of
             Buyer's feedback.

        1.4  Seller shall fabricate, specify (in the manner provided herein),
             design, simulate, prototype, assemble, test, and deliver a
             prototype silicon tuner in accordance with the final specification
             no later than *****.

        1.5  Buyer will develop or modify an existing cable modem and/or IP
             telephony and/or set-top box design to receive either a silicon
             tuner or silicon tuner-based module, in preparation for testing
             once the silicon tuner is available. The Buyer prototype testing
             design will be completed and available to receive the Microtune
             silicon tuner product within one week of delivery of the prototype
             tuner product to Buyer. Seller will provide a delivery schedule of
             the prototype tuner product a minimum of *****

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

             ***** in advance of the delivery date.

        1.6  Buyer and Seller agree to mutually develop and execute a prototype
             evaluation schedule that coincides with first availability of the
             silicon tuner.

        1.7  Seller agrees to make early samples of the silicon tuner product
             available to Buyer for evaluation and feedback and Buyer agrees to
             evaluate the Microtune silicon tuner and provide timely feedback to
             Seller.

        1.8  Seller agrees to incorporate pertinent performance enhancements and
             anomaly fixes into the Silicon Tuner per Buyer's input.

        1.9  Buyer agrees to identify potential programs for the Microtune
             silicon tuner solution and make best efforts to incorporate it into
             its product line under the condition that the Silicon Tuner
             solution meets GI's performance, cost, and power consumption goals.


2.0  Payment of NRE. In consideration for the resources and information made
     available to Seller hereunder, Seller agrees to pay Buyer the sum of
     ***** (the "NRE Amount"), payable in the following manner:

     ***** upon Seller's delivery of *****;

     ***** upon completion of ***** of the Seller's silicon tuner with written
     feedback to Seller;

     ***** upon completion of ***** incorporating the Seller's silicon tuner;

     ***** upon completion of ***** of the Seller's silicon tuner in Buyer's
     product (DOCSIS certification or other); and

     ***** upon first Buyer order for Seller's silicon tuner product in
     commercial quantities, but in no event less than *****.

   All payments of NRE shall be made within ***** days after the date of Buyer's
   invoice for such payments and approval by Seller of completion of the
   respective milestones.



***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first written above.



Buyer:                                  Seller:

GENERAL INSTRUMENT CORPORATION          MICROTUNE, INC.


By: /s/ Keith Jones                     By: /s/ Douglas J. Bartek
   ---------------------------------       -----------------------------------
Name:  Keith C. Jones                   Name:  Douglas J. Bartek
Title: V.P. & Director, Supply Mgmt.    Title: CEO and Chairman
Date:  June 14, 2000                    Date:  June 14, 2000

<PAGE>

                                   EXHIBIT C

                          PRODUCTS, PRICES, LEAD TIMES
<TABLE>
<CAPTION>

                                      Q2-CY00   Q3-CY00   Q4-CY00   Q1-CY01   Q2-CY01   Q3-CY01    Q4-CY01
                                      --------  --------  --------  --------  --------  --------  ----------
<S>                                   <C>       <C>       <C>       <C>       <C>       <C>       <C>
CABLE MODEM TUNER UNIT PURCHASES
(Note 1)
*****                                    ***       ***       ***       ***        ***        -           -
*****                                                        ***       ***        ***      ***         ***
*****                                                                             ***      ***         ***
*****                                                                                      ***         ***
Total Units                              ***       ***       ***       ***        ***      ***         ***

CABLE MODEM TUNER UNIT PRICES
*****                                 $  ***    $  ***    $  ***    $  ***    $   ***
*****                                                     $  ***    $  ***    $   ***   $  ***    $    ***
***** (Note 2)                                                                $   ***   $  ***    $    ***
***** (Note 3)                                                                          $  ***    $    ***
 Average Unit Price                   $  ***    $  ***    $  ***    $  ***    $   ***   $  ***    $    ***


CABLE MODEM TUNER EST. LEAD TIME (WKS)
*****                                    ***       ***       ***       ***        ***      ***         ***
*****                                    ***       ***       ***       ***        ***      ***         ***
*****                                                                             ***      ***         ***
*****                                                                                      ***         ***

</TABLE>

Note 1 - *****
Note 2:  *****
Note 3:  *****

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT D


                 BUYER'S DIVISIONS, SUBSIDIARIES AND AFFILIATES
                       PERMITTED TO ORDER UNDER AGREEMENT
<PAGE>

                                   EXHIBIT E


                               TERMS OF PURCHASE


1.  Order / Acceptance.

     (a) Each order ("Order") is an offer by General Instrument Corporation
("Buyer") to purchase the goods and/or services ("Products") identified by
Buyer, pursuant to the terms and conditions in the Manufacture and Supply
Agreement (the "Agreement") these terms and conditions and any other provisions
specifically incorporated by reference by Buyer on the face thereof. Each Order
shall be in the form of a written or electronic communication and shall contain
the following information unless otherwise specified in the Agreement:

     (i)  A description of the Product;
     (ii)  The quantity of the Product;
     (iii) The delivery date;
     (iv) The location to which the Products are to be shipped;
     (v) The location to which invoices shall be sent for payment; and
     (vi) Transportation instructions.

(b)  Seller shall accept and acknowledge each Order it is obligated to accept
under the provisions of this Agreement within ***** Business Days of receipt
by Seller of such Order without conditioning such acceptance upon the acceptance
by Buyer of any terms inconsistent with or in addition to those set forth in the
Agreement and these terms and conditions. Seller shall respond to all other
Orders within ***** Business Days of Seller's receipt of such other Order.
Acceptance of the Order by Seller may be made by signing and returning the
attached acknowledgment copy of the Order, by other express acceptance, or by
attempted part or full performance. Acceptance of the Order is limited to these
terms and conditions and such referenced provisions, and Buyer hereby rejects
any other terms, conditions and provisions. If Seller uses its own form to
accept the Order, it is understood that such use is for Seller's convenience
only and that Buyer hereby refuses to assent to any terms or conditions
contained therein, conflicting with or in addition to those contained herein,
and such conflicting and/or additional terms and conditions shall be of no force
or effect. The failure of Seller to acknowledge or accept any Order which it is
obligated to accept under the provisions of this Agreement shall have no effect
on Buyer's obligation to purchase and Seller's obligation to sell the Products
covered by such Order.

     (c) All quotations, purchase orders, acknowledgments and invoices issued
pursuant to the Agreement are issued for convenience of the Parties only and
shall be subject to the provisions of the Agreement and the Exhibits thereto.
The parties acknowledge that the preprinted provisions on the reverse side of
any such quotation, purchase order, release, acknowledgment or invoice shall be
deemed deleted. No modification to the Agreement, the Exhibits or any Order
shall be valid without the prior written consent of the Purchase Agreement
Coordinators of Seller and Buyer.

     (d) Termination or expiration of the Agreement shall not affect Orders
previously issued hereunder. In addition, the Agreement shall apply to Orders
issued by Buyer to Seller and accepted by Seller before the date of the
Agreement, and for which deliveries are scheduled after the date hereof. Such
Orders are hereby amended to reflect the prices contained in Exhibit C.  The
right to purchase granted hereunder shall apply only with respect to Products
actually ordered by Buyer prior to the termination date of the Agreement and
requested for delivery by Buyer not later than ***** months after said
termination date.

2.  Prices and Payment Terms

     (a) All prices are *****, which for RF tuners is currently in Manila, The
Philippines or such other location agreed to by both Seller and Buyer. Risk of
loss and title shall pass to Buyer upon *****. All prices are to be paid in U.S.
dollars. At the time Seller ships any Products under this Agreement it shall
send to Buyer by overnight delivery service, telefax or electronic mail a notice
of such shipment.

     (b) Seller's prices include *****. Seller assumes sole responsibility for
*****. If Buyer is purchasing the Products *****. Buyer shall be responsible for
*****.

     (c) Seller shall, subject to any relevant obligation of confidentiality,
provide to Buyer information and documentation reasonably requested by Buyer
with respect to the cost of items of Inventory and Special Inventory.Buyer shall
also review the test requirements for the Products. Seller shall provide
reasonable assurances to Buyer that *****.

     (d) Seller shall maintain, for a period of not less than ***** years
after the date of sale, or for such longer period as required by applicable law,
such records as

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

are necessary *****.

(e)  The Parties agree to cooperate in good faith to implement ***** involving
new technologies, component cost reduction, productivity, quality and
reliability improvements, and manufacturing processes. Buyer shall provide
Seller with reasonable assistance in the selection of raw materials, components
and manufacturing processes.

     Any ***** which are achieved by Seller as a result of implementing
*****.

(f)  Seller and Buyer shall cooperate in identifying selected components used in
the Products for *****. Information to be shared will include the manufacturer's
or supplier's part number and, when possible, *****. If Buyer is able to obtain
for Seller a supply of any components utilized by Seller in the Products of
comparable quality for a lower price than the price then being paid by Seller
for such component, and upon other terms acceptable to Seller (which terms shall
be deemed acceptable if substantially similar to the terms provided by Seller's
existing supplier of such components), the price of any Product in which such
component is used shall be reduced by an amount up to the amount of the decrease
in the price of the component to Seller, but only to the extent that there is no
decrease in Seller's gross profit margin for such affected Product.

3.  Manufacturing of Products

    (a) Buyer may, from time to time, request changes to the Specifications.
Seller shall use commercially reasonable efforts to accommodate the requested
changes. If changes result in *****. No changes shall be implemented and become
a part of the Agreement until ***** days following Seller's and Buyer's mutual
agreement of the modifications and *****, if any.

    (b) Seller shall consult with Buyer no less than ***** to perform a thorough
review of Seller's quality and delivery performance under the Agreement. Buyer
shall provide Seller, on ***** basis, a business metric review consisting of a
review of Seller's technology, quality, cost and service metrics. The criteria
on which these business metrics are based shall be at the discretion of Buyer to
facilitate continuous performance enhancement. The locations of both business
and metrics review meetings shall be held at sites alternately selected by
Seller and Buyer and mutually agreed upon.

4.  Packing, Transportation and Risk of Loss.

Seller shall mark, pack, package, crate, transport, ship and store all Products
to ensure (i) delivery of the goods to their ultimate destination in safe
condition, (ii) compliance with all requirements of the carrier and destination
authorities, (iii) compliance with any reasonable special instructions of Buyer,
and (iv) *****. All invoices, shipping documents, exterior packaging and
correspondence related thereto shall indicate the applicable Order number and
include suitable markings and information to reference the covered Products. All
shipments shall be accompanied by the appropriate shipping documents, including
without limitation, applicable customs and export documentation and a packing
list indicating the Order number, description of the goods, model numbers and
total quantity by "lot" for such goods. Buyer's count and/or weights shall be
conclusive on shipments not accompanied by a conforming packing list. Seller
shall bear all excess transportation and other charges and costs resulting from
any failure to follow Buyer's instructions hereunder. Notwithstanding the above,
overshipments to allow for reasonable efficiencies in packing and shipping will
be allowed.

5.  Inspection - Nonconformity.

     (a)  Buyer may inspect the Products upon receipt and/or at any time prior
thereto, provided that such inspection is completed within ***** days of receipt
of the Products at Buyer's facility. Buyer shall, however, be under no duty to
inspect the Products prior to Buyer's use or resale of the Products. Buyer
reserves the right to refuse to accept Products which do not conform with the
requirements of an Order (including, without limitation, delivery schedule and
shipping instructions) or the Specifications for the Products. Neither receipt,
retention, use, resale, nor payment of or for the same shall be construed to
constitute an acceptance of any Product not in compliance with the terms of
Buyer's Order or the Specifications, or construed to constitute a waiver of any
obligations of Seller with respect to its warranty relating to such Product.
Buyer may reject a lot or group of Products if ***** defective Products are
discovered and in such case, upon Seller's approval, the expenses of Buyer in
sorting and testing the Products in order to find defective units *****. Buyer
shall promptly return to Seller for repair or replacement, nonconforming
Products, including Products becoming nonconforming due to latent material or
workmanship defects not discovered during any inspection, testing and/or
acceptance. Products containing latent material or workmanship defects shall be
deemed rejected as of the time of delivery in the same manner as Products found
defective at the time of incoming inspection. Seller shall promptly and without
expense to Buyer replace or correct defects in any nonconforming Products.
*****. Within ***** days after ***** during the term of the Agreement, Buyer
shall provide Seller with its calculation of the Field Rejection Rate as of
*****.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       2
<PAGE>

     (b) Seller has the right to retest any Products returned by Buyer under
this Section 5, and Buyer has a right to witness any such retest.  Seller agrees
to promptly and without expense to Buyer, replace or correct Defects in any
nonconforming Products. Seller shall bear the risk, and all costs and expenses
including without limitation, storage, transportation, shipping, recalling,
repacking, reshipping and the like, associated with such repair and replacement.
Buyer shall bear all of the risk, and all costs and expenses, associated with
Products that have been returned to Seller for which there is no Defect found.

     (c) Seller agrees to deliver conforming Products ordered within *****
calendar days of the scheduled delivery dates contained in the Orders
(including, if so scheduled, weekly scheduled deliveries). Whenever Seller has
reason to believe performance will not be made strictly in accordance with
Buyer's schedule for any reason whatsoever, Seller shall immediately notify
Buyer by telephone of the same, to be followed promptly by written notification
to Buyer stating the causes for the anticipated delay. If Seller fails to
deliver to Buyer any conforming Product within the time period required under
any Order (provided that any lead time for such Product has expired and further
provided that such delay has not been caused by Buyer), *****. In addition, in
the event that Seller is not able to meet a delivery date for any conforming
Products which is within the time period requested (provided that such time
period is within the lead times established under the Agreement and further
provided that such delay has not been caused by Buyer), Buyer may instruct
Seller with regard to Buyer's preferred method of shipment, *****.

     (d) Buyer reserves the right to reject Products delivered more than *****
Business Days in advance of the scheduled delivery date.  If Buyer retains
such Products it will hold Seller's invoice until the date it would ordinarily
be due if delivery had been made in accordance with the scheduled delivery date.

     (e) Except for reasonable efficiencies in packing and shipping, Seller will
not make partial shipments of units of Products covered by an Order without the
prior written consent of Buyer.

     (f) Buyer expects ***** acceptable parts, manufactured and tested to the
Specifications, and will not be bound by any Seller procedure designating any
other acceptable quality level.

     (i) In the event that the Field Rejection Rate of any Product at any time
is greater than *****, beginning on the date that Seller receives written
notification from Buyer of the Field Rejection Rate excess, the purchase price
for any units of such Product to be delivered after the notification date shall
be reduced by an amount equal to ***** of such purchase price until such time as
the Field Rejection Rate decreases to less than *****.

          (j) Subject to Buyer's review and reasonable approval, Seller shall
establish and maintain quality assurance procedures to produce Products with
performance and reliability characteristics meeting or exceeding those required
by the Agreement and shall provide and maintain a quality control, inspection
and test system for all Products in accordance with industry standards. Upon the
reasonable request by Buyer, Seller shall provide written certification of such
compliance with such program and standards. Seller represents that all
facilities used to manufacture Products under this Agreement are ***** and the
parties agree that ***** meets the quality control, inspection and test system
requirements for all Products hereunder. Prior to shipping any Products from
Seller's Facility, and upon the request of Buyer, Seller will issue to Buyer a
certificate as to the compliance of Products with applicable Specifications (a
"Certificate of Compliance"). Within ***** following the receipt of such
Certificate of Compliance, Buyer shall have the right to instruct Seller to
forego shipping such Products based on unsatisfactory test results for such
Products. If Seller fails to provide Buyer with a Certificate of Compliance,
after Buyer request, for any Product by at least ***** prior to shipment, Buyer
shall have the right to reject such Product at any time as nonconforming. Buyer
may inspect Products at Seller's Facility and Seller shall provide all
reasonable facilities and assistance for such inspection, provided, Buyer gives
Seller at least ***** advance notice and such inspection does not interrupt the
standard course of Seller's business To the extent that test procedures or
quality control requirements are included in Exhibit I, such test procedures and
requirements shall be in addition to the obligations described in this Section.
Seller shall replace all Products that do not pass any test procedures described
herein. Complete and accurate records relating to such tests shall be maintained
by Seller at all times during the term of the Agreement and for a period of
three years thereafter. Buyer shall have the right to inspect all testing
records maintained by Seller during normal hours and after Buyer gives Seller at
least ***** notification.

     (m) This Section (or any action taken by Buyer hereunder) shall not be
construed or interpreted to mean that Buyer has waived any rights it may have
under any provision of the Agreement (including the Exhibits hereto), or
otherwise, in connection with late deliveries of Products by Seller.

6.  Performance and Warranty.

     (a) The performance dates indicated on the Order shall be deemed to be of
the essence of this contract, and failure to adhere to such dates (which in the
case of the delivery of Products shall be within ***** of such dates) shall be a
breach hereof. Products manufactured or delivered, inventory purchased, or
commitments or production arrangements made, in excess of the amount, or in
advance of the time reasonably necessary to meet Buyer's schedule or Buyer's
express releases are entirely at Seller's risk, and may be rejected and/or
returned to Seller at Seller's expense. When Seller has reason to believe
performance may not be made strictly in accordance with Buyer's schedule or
releases, Seller shall immediately notify Buyer by telephone, with written
confirmation, providing the details of such potential failure, and if so
requested by Buyer, Seller shall use commercially reasonable efforts *****.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       3
<PAGE>

     (b) Seller warrants to Buyer and to Buyer's customers that for a period of
***** from the date of the receipt of each Product at Buyer's facility that such
Product will conform to all applicable Specifications, and will be free from
defects, material and workmanship. This warranty does not apply to (a) materials
consigned or supplied by Buyer to Seller; (b) defects resulting from Buyer's
Specifications or the design of the Products; or (c) Products that have been
abused, damaged, altered or misused by any person or entity after they have been
received by Buyer at Buyer's facility. With respect to first articles,
prototypes, pre-production units, test units or other similar Products, *****.
Notwithstanding anything else in the Agreement, Seller assumes no liability for
or obligation related to the performance, accuracy, specifications, failure to
meet specifications or defects of or due to tooling, designs or instructions
produced or supplied by Buyer and Buyer shall be liable for costs or expenses
incurred by Seller related thereto.

     (c) Seller's shall replace or repair, at Seller's option, defective or
nonconforming Products.

     (d) The warranties provided in this Section 6 are applicable only if Seller
receives written notice of a breach of warranty mailed to its office within
***** after the end of the applicable warranty period. The warranties provided
herein shall not apply to Products or parts thereof that have been subjected to
misuse, neglect, accident, damage in transit, abuse or unusual hazard.

     (e) Failure by Seller to repair or replace a defective Product within
***** Business Days after it has been received and verified by Seller shall be
considered a default.

     (f) Seller shall pay all transportation costs for the return of the
Products to Seller and for the shipment of the repaired or replacement Products
to Buyer and shall bear all risk of loss or damage to such Products while in
transit. Seller shall repair or replace any Products returned to it for warranty
repair within ***** Business Days after Seller receives the Product, and will
provide Buyer with a failure analysis report and a corrective action plan. In
the event that any Product is returned for warranty repair more than ***** times
based on similar reasons relating to its functionality or usability, Seller
shall immediately provide Buyer or Buyer's customers with a new, conforming
replacement Product or if so elected by Buyer or Buyer's customers, provide a
refund of the purchase price of such Product. In the event that any Product is
returned for warranty repair and such Product is not repaired within ***** days
from the date of receipt by Seller of such Product, Seller shall immediately
provide Buyer or Buyer's customers with a new, conforming replacement Product or
if so elected by Buyer or Buyer's customers, provide a refund of the purchase
price of such product. Any repaired Product shall be warranted as set forth in
this Section 6 for a period equal to the greater of (i) the balance of the
applicable warranty period relating to such Product or (ii) ***** days after it
is received by Buyer's customer. Any replacement Product shall be warranted for
the applicable warranty period set forth in this Section 6 relating to a new
Product. If any Product returned for warranty repair is not covered by the terms
of the warranty applicable to such Product or does not have a Defect, the actual
shipping costs incurred shall be paid by Buyer to Seller.

     (g) In addition to "in-warranty" repairs under this Section 6, Seller
agrees to provide repair service for any Product ordered during the term of the
Agreement for a period of ***** after the termination of the warranty period
applicable to such Product. Seller shall provide such out-of-warranty repairs at
the repair charges then generally charged by Seller for such repairs or, if such
repairs are not then being performed by Seller, at reasonable rates.

     Defective Products out-of-warranty may be returned at Buyer's expense to
Seller for repair or replacement. If any Product returned to Seller for repair
is reasonably determined to be irreparable, Seller shall promptly notify Buyer.
Seller shall then, at Buyer's option, sell to Buyer a replacement Product, if
available, *****.

     Seller shall complete repairs and ship the repaired Product or, as
authorized by Buyer in an equipment repair order, a replacement Product within
Seller's then standard lead time for the replacement Product. Buyer shall bear
the risk of loss or damage during transit of the Product to and from the Seller
and shall prepay and bear the cost of transportation charges for shipment to and
from the Seller of the Product to be repaired or replaced. If Seller reasonably
determines that the Product returned is not defective, Seller shall promptly
advise Buyer in writing of such determination. In such case, Seller shall return
the Product to Buyer, at Buyer's expense, in its "as received" condition.

     Any out-of-warranty repair performed by Seller shall be warranted as set
forth in this Section 6 for a period of ***** after the repaired Product is
returned to the Buyer. Any replacement Products shall be warranted for the
applicable warranty period set forth in this Section 6 relating to a new Product

     (h) The warranties in this Section shall run to Buyer, its successors and
assigns, and shall not be the exclusive remedies of such parties.
7.  Representations and Warranties
Seller and Buyer hereby represent and warrant as follows:

     (a) To their knowledge, Seller and Buyer respectively represent and warrant
that no impediment exists to their entering into the Agreement and they have not
made any agreement with any third party which will interfere with their
performance under the Agreement.

     (b) To their knowledge, Seller and Buyer respectively represent and warrant
that no information contained in any proposal, quotation or other document
submitted by Seller or Buyer to the other in connection with the transactions
contemplated by the Agreement is incorrect or misleading.

     (c) Seller's performance under the Agreement, as well as all Products
provided hereunder, will comply with all applicable international, national,
federal, state and local laws and ordinances, and all orders, rules,

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       4
<PAGE>

regulations and requirements thereunder. All Products will be marked, as
required, to show compliance with the laws of any country in which such Products
will be used, sold or leased by Buyer.

8.  Indemnity.

     (a) Seller shall indemnify, defend, and hold harmless Buyer and Buyer's,
affiliates, directors, officers, employees, agents, other representatives and
customers from all demands, claims, actions, causes of action, proceedings,
assessments, losses, damages, liabilities, settlements, judgments, fines,
penalties, interest, costs and expenses (including reasonable fees and
disbursements of counsel) of every kind based upon (i) personal injury, death,
or property damage to the extent any of the foregoing is proximately caused
either by a  Defect in material or workmanship of such Product or by the
negligent or willful acts or omissions of Seller or its officers, employees,
subcontractors or agents, or (ii) strict liability in tort or products liability
of any kind in connection with any Product to the extent any of the foregoing is
proximately caused either by a  Defect in material or workmanship or by the
negligent or willful acts or omissions of Seller or its officers, employees,
subcontractors or agents. The foregoing indemnity, to the extent permitted by
law, shall apply in the case of all claims that arise from the negligence,
misconduct or other fault of Seller, provided, however, that if a claim is the
result of joint negligence, joint misconduct, or joint fault of Seller and
Buyer, the amount of the claim for which Buyer is entitled to indemnification
shall be limited to that portion of such claim that is attributable to the
negligence, misconduct, or other fault of Seller. The obligations of Seller
under this paragraph are in addition to Seller's obligation to provide insurance
and shall not be limited by any limitation on the amount of type of damages,
compensation or benefits payable by Seller under any workers compensation acts
or similar employee benefit act.

     (b)  Buyer shall indemnify, defend, and hold harmless Seller and Seller's
affiliates, directors, officers, employees, contractors, agents and other
representatives from all demands, claims, actions, causes of action,
proceedings, assessments, losses, damages, liabilities, settlements, judgments,
fines, penalties, interest, costs and expenses (including reasonable fees and
disbursements of counsel) of every kind based upon (i) personal injury, death,
or damage to tangible personal property to the extent any of the foregoing is
caused by a defect in the designs and/or Specifications provided by Buyer for
the Product, or (ii) strict liability in tort or products liability of any kind
in connection with any Product to the extent any of the foregoing is caused by a
defect in the designs and/or Specifications provided by Buyer for the Product.
If a claim is the result of joint negligence, joint misconduct, or joint fault
of Buyer and Seller, the amount of the claim for which Seller is entitled to
indemnification shall be limited to that portion of such claim that is
attributable to the negligence, misconduct, or other fault of Buyer. The
obligations of Buyer under this paragraph are in addition to Buyer's insurance
and shall not be limited by any limitation on the amount of type of damages,
compensation or benefits payable by Buyer under any workers compensation acts or
similar employee benefit act.

     (c) A party entitled to indemnification pursuant to Section 8(a) or 8(b)
(the "Indemnitee") shall promptly notify the other party (the "Indemnitor") in
writing of any suits, claims or demands covered by this indemnity. Promptly
after receipt of such notice, the Indemnitor shall assume the defense of such
claim with counsel reasonably satisfactory to the Indemnitee. If the Indemnitor
fails, within a reasonable time after receipt of such notice, to assume the
defense with counsel reasonably satisfactory to the Indemnitee or, if in the
reasonable judgment of the Indemnitee, a direct or indirect conflict of interest
exists between the parties with respect to the claim, the Indemnitee shall have
the right to undertake the defense, compromise and settlement of such claim for
the account and at the expense of the Indemnitor. Notwithstanding the foregoing,
if the Indemnitee in its sole judgment so elects, the Indemnitee may also
participate in the defense of such action by employing counsel at its expense,
without waiving the Indemnitor's obligation to indemnify and defend. The
Indemnitor shall not compromise any claim or consent to the entry of any
judgment without an unconditional release of all liability of the Indemnitee to
each claimant or plaintiff.

     (d) Seller shall indemnify, defend, and hold harmless Buyer and Buyer's
customers affiliates, directors, officers, employees, and , agents from all
demands, claims, actions, causes of action, proceedings, assessments, losses,
damages, liabilities, settlements, judgments, fines, penalties, interest, costs
and expenses (including fees and disbursements of counsel) arising from or
relating to any actual or alleged infringement or misappropriation of any
patent, trademark, copyright, trade secret or any actual or alleged violation of
any other intellectual property rights arising from or in connection with the
manufacture of the Products, except to the extent that such infringement exists
solely as a result of use by Seller of the  designs and/or Specifications
provided by Buyer for the Product and such infringement would not exist but for
the use by Seller of the designs and/or Specifications provided by Buyer for the
Product.

     (e) In the event of any allegation of infringement of the type described in
Section 8(d), or a claim or suit based thereon (the "Allegation"), the
indemnified party shall promptly notify Seller of such Allegation in writing.
Seller shall assume the defense of such claim with counsel reasonably
satisfactory to Buyer. If Seller fails, within a reasonable time after receipt
of such notice, to assume the defense with counsel reasonably satisfactory to
Buyer or, if in the reasonable judgment of Buyer a direct or indirect conflict
of interest exists between the parties with respect to the claim, Buyer shall
have the right to undertake the defense, compromise and settlement of such claim
for the account and at the expense of the Seller. Notwithstanding the foregoing,
if Buyer in its sole judgment so elects, Buyer may also participate in the
defense of such actions by employing counsel at its expense, without waiving
Seller's obligation to indemnify and defend. Seller shall not compromise any
claim or consent to the entry of any judgment without an unconditional release
of all liability of Buyer to each claimant or plaintiff.

     (f) In the event that the use of any Product is enjoined, Seller shall at
its option, do one or more of the following:

          (i) *****; or

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       5
<PAGE>

          (ii) *****; provided that the *****
                     --------

     If Seller is unable to accomplish (i) or (ii) within ***** days after
the issuance of such injunction, Buyer may, in addition to all other rights and
remedies available to it, require Seller to ***** including, without
limitation, *****.

     (g) Notwithstanding any other provision of this Section to the contrary,
Seller shall have no liability for any Allegation or portion of an Allegation
based solely upon either (a) the combination of non-infringing Products with
other products, unless Seller sold, manufactured, or recommended such other
products or was aware of the intended combination with such other products or
such combination is necessary for the intended use of the Products or (b) the
modification of the Products after they are delivered to Buyer unless Seller
makes or recommends such modification, the modification constitutes normal
repair or replacement in accordance with Seller's repair procedures, or the
modification is the result of the implementation of Seller provided options and
enhancements for the Products.

     (h) Buyer  shall indemnify, defend, and hold harmless Seller and Seller's
directors, officers, employees, and agents from all demands, claims, actions,
causes of action, proceedings, assessments, losses, damages, liabilities,
settlements, judgments, fines, penalties, interest, costs and expenses
(including reasonable fees and disbursements of counsel) arising from or
relating to any actual or alleged infringement or misappropriation of any
patent, trademark, copyright, trade secret or any actual or alleged violation of
any other intellectual property rights arising from or in connection with the
manufacture of the Products, but only to the extent that such infringement
exists as a result of the authorized use by Seller of designs and/or
Specifications provided by Buyer for the Product and such infringement would not
exist but for the use by Seller of the designs and/or Specifications provided by
Buyer for the Product or as a result of any modifications by Buyer to the
Products after delivery to Buyer by Seller hereunder. In the event of any
Allegation of infringement of the type described in this Section 8(h) or a claim
or suit based thereon, the indemnified party shall promptly notify Buyer of such
Allegation in writing. Buyer shall assume the defense of such claim with counsel
reasonably satisfactory to Seller. If Buyer fails, within a reasonable time
after receipt of such notice, to assume the defense with counsel reasonably
satisfactory to Seller, or, if in the reasonable judgment of Seller a direct or
indirect conflict of interest exists between the parties with respect to the
claim, Seller shall have the right to undertake the defense, compromise and
settlement of such claim for the account and at the expense of the Buyer.
Notwithstanding the foregoing, if Seller in its sole judgment so elects, Seller
may also participate in the defense of such actions by employing counsel at its
expense, without waiving Buyer's obligation to indemnify and defend. Buyer shall
not compromise any claim or consent to the entry of any judgment without an
unconditional release of all liability of Seller to each claimant or plaintiff.


10.  Insurance.

     Seller shall maintain during the term of the Agreement adequate levels of
insurance, customary in the industry, such as workers compensation, employer's
liability insurance, comprehensive automobile liability insurance, comprehensive
general liability insurance, and comprehensive general liability. *****.

11.  General Provisions

     (a) Neither party may assign its rights, nor secure the assumption of its
obligations, nor subcontract or delegate performance, under the Agreement,
without the prior written consent of the other not to be unreasonably withheld;
provided, however, that such consent shall not be required for a transfer or
assignment of this Agreement to a parent or subsidiary of such party as of the
date of this Agreement or a subsequent parent or subsidiary of such party upon
the reincorporation or restructuring of the party which does not change the
ultimate ownership of the party.

     (b) Other than as provided herein, the Agreement does not *****.

     (c) Seller and Buyer are each independent contractors.  Nothing in the
Agreement shall constitute the parties as partners, joint ventures, co-owners or
otherwise as participants in a joint or common undertaking.  Neither party shall
be considered an agent or legal representative of the other for any purpose, and
neither party nor any of their respective directors, officers, agents or
employees shall be, or be considered, an agent or employee of the other.
Neither Seller nor Buyer has authority to assume or create any obligation or
responsibility on behalf of the other or in the other's name, and neither Seller
nor Buyer will attempt to do so.

     (d) Seller shall, at Seller's expense (i) promptly furnish to Buyer such
assurances, product markings, certifications and information as Buyer may
request with respect to any local or regional origin content requirements for
the Products  (Seller will further coordinate the selection of its suppliers in
compliance therewith).  Seller shall comply with all laws, regulations,
executive orders and policies applicable to it by any jurisdiction, including
without limitation, those related to workplace conditions and environmental
regulation, and shall obtain all permits needed to complete this transaction
under the laws of the country from which the shipment is made, including among
other things, any required export permits. It shall be a

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       6
<PAGE>

breach of the Order if any gratuities are offered or given to any officer,
agent, employee or representative of Buyer or to the extent violative of any
law, to any representative of any government or political party, for the purpose
of securing favorable treatment with respect to the awarding, performance or
amendment of any contract. In the event Seller will be performing services
hereunder at Buyer's facility Seller shall maintain adequate insurance coverage
for public liability, personal injury and property damage (and shall evidence
the same at Buyer's request), shall otherwise comply with all security
procedures and other applicable rules affecting the services provided.

     (e)  A party may deduct from any payment due to the other party, or set-off
against any claim by the other, any amount which is due to it for any reason,
including, among other reasons, any charges caused by deviations from the terms,
conditions and provisions of the Order and/or this Agreement.. If any
manufacturer's excise tax, value added tax or other tax measured by selling
price is included in or added to the price of the goods paid by Buyer, then, in
the event all or any part of that tax shall be refunded to Seller, Seller shall
promptly remit such refund in full to Buyer.

     (f)  EXCEPT TO THE EXTENT SET FORTH IN SECTION 8 HEREOF OR IN THE NON-
DISCLOSURE AGREEMENT ATTACHED TO THIS AGREEMENT, *****.

     (g) This document and any other documents referenced herein, constitute the
entire agreement between the parties on this subject.  All other prior
representations, negotiations or arrangements on this subject matter are
superseded by these terms and shall not form a basis for interpretation of these
terms.  All amendments to these terms must be agreed to in writing by Buyer and
Seller.  Seller or Buyer may waive performance of any condition, but any waiver
by Buyer or Seller shall not be considered a waiver for succeeding performance.
If any provision of the Agreement or these Terms of Purchase is declared invalid
by any tribunal or legal authority having jurisdiction, the remaining provisions
not so declared invalid shall be enforced to the fullest extent permitted by
law, unless the removal of such invalid part shall have the effect of materially
impairing the Agreement.

     (h) This transaction and all its terms shall be governed and construed in
accordance with the laws of the State of California., without giving effect to
conflicts of law principles, specifically including the provisions of the
California Uniform Commercial Code and excluding the provisions of the
Convention on the International Sale of Goods.

     (i) Each party agrees that it will not export or re-export, directly or
indirectly, any of the other party's Confidential Information or items to any
country for which the United States of America, at the time of export or re-
export, requires an export license or other governmental approval, without first
obtaining such license or approval.

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.

                                       7
<PAGE>

                                   EXHIBIT F


                        PURCHASE AGREEMENT COORDINATORS

          FOR BUYER:


               Motorola, Inc.
               101 Tournament Drive
               Horsham, PA  19044
               Attention:__________________________
               Phone:  (215) ______________________
               Fax:    (215) ______________________



          FOR SELLER:

               Microtune, Inc.
               2540 East Plano Parkway, Suite 188
               Plano, Texas 75074
               ______________
               Attention:President
               Phone:(972) 673-1600
               Fax:(972) 673-1602
<PAGE>

                                   EXHIBIT G

                                 SPECIFICATIONS

General Instrument ***** specification *****

General Instrument ***** specification *****

General Instrument specifications to meet the performance of *****

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT H

                            NON-DISCLOSURE AGREEMENT



Non-Disclosure Agreement dated 13th October 1999

<PAGE>

                                   EXHIBIT I


                               QUALIFICATION PLAN


The tuner must allow the Buyers product to meet applicable CableLabs DOCSIS
specifications:

*****

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.
<PAGE>

                                   EXHIBIT K


           GENERAL INSTRUMENT COMPONENT QUALIFICATION AND CHANGE PLAN




                     Qualification and Change Plan, *****

***** Portions redacted pursuant to a request for confidential treatment filed
with the Securities and Exchange Commission.