GP2Y0A21YK0F

GP2Y0A21YK0F

Distance Measuring Sensor Unit
Measuring distance: 10 to 80 cm
Analog output type

■Description■Agency approvals/Compliance

GP2Y0A21YK0F is a distance measuring sensor unit,
composed of an integrated combination of PSD(position sensitive detector) , IRED (infrared emittingdiode) and signal processing circuit.
The variety of the reflectivity of the object, theenvironmental temperature and the operating duration
are not influenced easily to the distance detection
because of adopting the triangulation method.
This device outputs the voltage corresponding to thedetection distance. So this sensor can also be used asa proximity sensor.

■Features

1. Compliant with RoHS directive (2002/95/EC)■Applications
1. Touch-less switch(Sanitary equipment, Control of illumination, etc. )2. Robot cleaner
3. Sensor for energy saving(ATM, Copier, Vending machine)
4. Amusement equipment(Robot, Arcade game machine)

1. Distance measuring range : 10 to 80 cm
2. Analog output type
3. Package size : 29.5×13×13.5 mm
4. Consumption current : Typ. 30 mA
5. Supply voltage : 4.5 to 5.5 V

Notice The content of data sheet is subject to change without prior notice.
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
Sheet No.: E4-A00201EN
1Date Dec.01.2006©SHARP Corporation

GP2Y0A21YK0F■Block diagram
ＧＮＤ

Ｖｃｃ

ＰＳＤ

Signalprocessing circuit

Voltage regulator

ＶｏOscillation circuit

Output circuit

LED drive circuit
ＬＥＤDistance measuring IC■Outline Dimensions(Unit : mm)(Stamp)

Stamp(Example)
2Y0A21 F
Model name

2Y0A21 F 4Z
37
29.5

Light emitter* 20±0.1

Lens case

6.3
275

*4.5

Month(1 to 9,X,Y,Z)
Year(2005:5)

Light detector

R3.

φ

ho

13(18.9 +0.5-0.3 )

8.4

le
7.2

3.2

4 Z

φ

3.2

R3.

75

ho

3.75

leConnector
10.1

PWB

14.75

1.2
(3.3)

16.3

①②③

13.5

4.15

2-1.5

7.5

Connector signal
signal name

VOGND

Materials
Lens :Acrylic acid resin(Visible light cut-off resin)
Case :Carbonic ABS(Conductive resin)
PWB :Paper phenol

Connector :J.S.T.TRADING COMPANY,LTD,
S3B-PH

VCC

Note 1. The dimensions marked * are described the dimensions of lens center position.
Note 2. Unspecified tolerances shall be ± 0.3 mm.
Note 3. The dimensions in parenthesis are shown for reference.

Product mass : Approx. 3.6g
Sheet No.: E4-A00201EN

2

GP2Y0A21YK0F■Absolute Maximum Ratings
Parameter
Supply voltage
Output terminal voltage
Operating temperature
Storage temperature(Ta=25℃,VCC=5V)

Symbol
VCCVO
Topr
Tstg

Rating-0.3 to +7-0.3 to VCC+0.3-10 to +60-40 to +70

Unit
VV℃℃

(Ta=25℃,VCC=5V)■Electro-optical Characteristics
Parameter
Average supply current
Distance measuring
Output voltage

SymbolICC
ΔLVO

Output voltage differential

ΔVOConditions
L=80cm (Note 1)(Note 1)
L=80cm (Note 1)
Output voltage differece between
L=10cm and L=80cm (Note 1)

MIN.
―
100.25

TYP.
30
―
0.4

MAX.
4080
0.55

UnitmA
cm
V

1.65

1.9

2.15

V

* L : Distance to reflective objectNote 1 : Using reflective object : White paper (Made by Kodak Co., Ltd. gray cards R-27・white face, reflectance; 90%)

■Recommended operating conditions
Parameter
Supply voltage

Symbol
VCC

Rating
4.5 to 5.5

UnitV

Sheet No.: E4-A00201EN

3GP2Y0A21YK0F
Fig. 1 Timing chart

Vcc(Power supply)
38.3ms±9.6ms
Distance measuring operating

Vo(Output)

First measurement

Unstable output

Secondmeasurement

First output

nthmeasurement

Second output

nthoutput

MAX 5.0ms

Sheet No.: E4-A00201EN

4GP2Y0A21YK0F

Fig. 2 Example of distance measuring characteristics(output)
3.5
White paper (Reflectance ratio 90%)
Gray paper (Reflectance ratio 18%)

3

Output voltage (V)2.521.5
10.500102030
4050
60
Distance to reflective object L(cm)7080

3.56cm35cm

7cm

Output voltage (V)

8cm

2.5
10cm

215cm

1.525cm

130cm
50cm

0.5

80cm

020cm

040cm

White paper (Reflectance ratio 90%)
Gray paper (Reflectance ratio 18%)

0.1
0.15
0.05
Inverse number of distance (1/cm)

0.2

Sheet No.: E4-A00201EN

5GP2Y0A21YK0F■Notes●Advice for the optics• The lens of this device needs to be kept clean. There are cases that dust, water or oil and so on deteriorate
the characteristics of this device. Please consider in actual application.
• Please don’t do washing. Washing may deteriorate the characteristics of optical system and so on.
Please confirm resistance to chemicals under the actual usage since this product has not been designed against washing.

●Advice for the characteristics• In case that an optical filter is set in front of the emitter and detector portion, the optical filter which has the mostefficient transmittance at the emitting wavelength range of LED for this product (λ = 870 ± 70nm), shall berecommended to use. Both faces of the filter should be mirror polishing. Also, as there are cases that the characteristics
may not be satisfied according to the distance between the protection cover and this product or the thickness of theprotection cover, please use this product after confirming the operation sufficiently in actual application.
• In case that there is an object near to emitter side of the sensor between sensor and a detecting object, please use thisdevice after confirming sufficiently that the characteristics of this sensor do not change by the object.
• When the detector is exposed to the direct light from the sun, tungsten lamp and so on, there are cases that it can notmeasure the distance exactly. Please consider the design that the detector is not exposed to the direct light from suchlight source.
• Distance to a mirror reflector can not be sometimes measured exactly.
In case of changing the mounting angle of this product, it may measure the distance exactly.
• In case that reflective object has boundary line which material or color etc. are excessively different, in order todecrease deviation of measuring distance, it shall be recommended to set the sensor that the direction of boundary line
and the line between emitter center and detector center are in parallel.

(Incorrect)(Correct)• In order to decrease deviation of measuring distance by moving direction of the reflective object, it shall berecommended to set the sensor that the moving direction of the object and the line between emitter center anddetector center are vertical.

(Incorrect)(Correct)(Moving direction)(Moving direction)●Advice for the power supply• In order to stabilize power supply line, we recommend to insert a by-pass capacitor of 10μF or more
between Vcc and GND near this product.

●Notes on handling• There are some possibilities that the internal components in the sensor may be exposed to the excessive mechanicalstress. Please be careful not to cause any excessive pressure on the sensor package and also on the PCB whileassembling this product.

Sheet No.: E4-A00201EN

6

GP2Y0A21YK0F●Presence of ODC etc.

This product shall not contain the following materials.
And they are not used in the production process for this product.
Regulation substances : CFCs, Halon, Carbon tetrachloride, 1.1.1-Trichloroethane (Methylchloroform)
Specific brominated flame retardants such as the PBB and PBDE are not used in this product at all.
This product shall not contain the following materials banned in the RoHS Directive (2002/95/EC).
• Lead, Mercury, Cadmium, Hexavalent chromium, Polybrominated biphenyls (PBB),
Polybrominated diphenyl ethers (PBDE).

Sheet No.: E4-A00201EN

7

GP2Y0A21YK0F■Package specificationPackage composition

Pad(2 sheeets/case: top and bottom)
Tray put products(10-tray/case)

ProductPad(10 sheeets/case)Tray(Fig.2)

Packing case

Craft tape(Fig.1)(Fig.3)Model No.
QuantityDate

Packaging method
1.Put products of 100pcs. in tray. packing method is showed in the above fig.(Fig.1)
2.Put them(10-tray) in the packing box. Put pads on their top and bottom.
And put pads on each trays(Total 10 sheets) (Fig.2).
3.Seal the packing box with craft tape.
Print the model No.,quantity,inspection date (1000 pcs./a packing box)(Fig.3).

Sheet No.: E4-A00201EN

8GP2Y0A21YK0F■Important Notices· The circuit application examples in this publication areprovided to explain representative applications ofSHARP devices and are not intended to guarantee any circuitdesign or license any intellectual property rights. SHARP
takes no responsibility for any problems related to any
intellectual property right of a third party resulting from the useof SHARP's devices.

with equipment that requires higher reliability such as:--- Transportation control and safety equipment (i.e.,aircraft, trains, automobiles, etc.)--- Traffic signals--- Gas leakage sensor breakers--- Alarm equipment--- Various safety devices, etc.
(iii) SHARP devices shall not be used for or inconnection with equipment that requires an extremely highlevel of reliability and safety such as:--- Space applications--- Telecommunication equipment [trunk lines]--- Nuclear power control equipment--- Medical and other life support equipment (e.g.,scuba).

· Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device. SHARP
reserves the right to make changes in the specifications,characteristics, data, materials, structure, and othercontents described herein at any time without notice inorder to improve design or reliability. Manufacturinglocations are also subject to change without notice.
· Observe the following points when using any devices in thispublication. SHARP takes no responsibility for damage
caused by improper use of the devices which does not meet theconditions and absolute maximum ratings to be used specified
in the relevant specification sheet nor meet the following conditions:(i) The devices in this publication are designed for use ingeneral electronic equipment designs such as:--- Personal computers--- Office automation equipment--- Telecommunication equipment [terminal]--- Test and measurement equipment--- Industrial control--- Audio visual equipment--- Consumer electronics(ii) Measures such as fail-safe function and redundant design
should be taken to ensure reliability and safety when SHARP
devices are used for or in connection· If the SHARP devices listed in this publication fallwithin the scope of strategic products described in theForeign Exchange and Foreign Trade Law of Japan, it isnecessary to obtain approval to export such SHARP devices.
· This publication is the proprietary product of SHARP andis copyrighted, with all rights reserved. Under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means,electronic or mechanical, for any purpose, in whole or inpart, without the express written permission of SHARP.
Express written permission is also required before any useof this publication may be made by a third party.
· Contact and consult with a SHARP representative if there
are any questions about the contents of this publication.

Sheet No.: E4-A00201EN

9