GP2Y0A21YK0F Datasheet – IR Distance Sensor – Sharp

Part Number: GP2Y0A21YK0F

Function: Distance Measuring Sensor Unit

Measuring distance : 10 to 80 cm Analog output type

Manufacturer: Sharp Electronics

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GP2Y0A21YK0F datasheet



The GP2Y0A21YK0F is a distance measuring sensor unit, composed of an integrated combination of PSD (position sensitive detector) , IRED (infrared emitting diode) and signal processing circuit.

The variety of the reflectivity of the object, the environmental 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 the detection distance. So this sensor can also be used as a proximity sensor.

Block diagram

GP2Y0A21YK0F block diagram


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


GP2Y0A21YK0F datasheet pinout


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)

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