SHARP Distance Measuring Proximity Sensor Analog Infrared 10 to 80 cm GP2Y0A21F2Y with Cable

Description and Operation

• Key Advantage: It is less affected by object reflectivity, environmental temperature, or operating time compared to other sensors.
• Output: The output voltage ranges from approximately 3.1V at 10 cm to 0.4V at 80 cm.
• Ideal Application: Suitable for robot cleaners, non-contact switches, and energy-saving sensors in equipment like vending machines.

Specifications

• Distance Measuring Range: 10 cm to 80 cm.
• Operating Voltage: 4.5 V to 5.5 V.
• Average Current Consumption: 30 mA (typical).
• Output Type: Analog Voltage.
• Update Period: 38 ms ± 10 ms.
• Package Size: 29.5 × 13.0 × 13.5 mm (approx. 1.16″ × 0.5″ × 0.53″).
• Weight: 3.5 g.

Features

• Simple Interface: Three-wire interface (VCC, GND, Signal) makes it easy to connect to microcontrollers like Arduino.
• High Performance: Provides better performance and more accurate, consistent results than many other IR alternatives.
• Compact Design: Small footprint, making it easy to embed into small devices.
• Stable Operation: Not easily influenced by target reflectivity or ambient conditions.
• Included Connector: Typically uses a Japanese Solderless Terminal (JST) connector.

Usage Tips

• Power Stabilization: The sensor draws current in short, large bursts. The manufacturer recommends placing a 10 F or larger capacitor between VCC and GND close to the sensor to prevent voltage fluctuations.
• Measurement Accuracy: The output is not perfectly linear. A lookup table or a formula (distance 27 / Voltage) can be used to convert the analog voltage to distance in cm.

Datasheet:

Datsheet for Sharp GP2Y0A21YK0F – analog distance sensor 10-80cm