GP2Y0A02YK0F Infrared Distance Sensor Module 20-150cm Range with 20cm Cable – Sharp Analog Output

Description

The GP2Y0A02YK0F is Sharp’s longest-range analog infrared distance sensor, designed for applications requiring reliable object detection at greater distances than shorter-range models can provide. It uses optical triangulation—combining an infrared emitting LED (IRED) and a position-sensitive detector (PSD)—to measure distance to a reflective object, outputting an analog voltage that varies inversely with distance . With a detection range of 20cm to 150cm, this sensor is a viable alternative to sonar in many robotics and automation applications, offering better performance than simpler IR sensors at a lower cost than ultrasonic rangefinders .

The sensor connects to any microcontroller with an ADC, making it suitable for Arduino, ESP32, and Raspberry Pi projects (with external ADC). The output voltage ranges from approximately 0.4V at 150cm to 2.7V at 20cm, with a typical output voltage differential of 2.05V over the full range . The relationship between output voltage and the inverse of distance is approximately linear, allowing conversion to distance through a best-fit line or empirical formula .

Critical power supply note: The sensor draws current in large, short bursts during its internal LED pulses. Sharp strongly recommends placing a 10µF or larger bypass capacitor between VCC and GND as close to the sensor as possible to stabilize the power supply and prevent erratic readings .

Features

• 20–150cm Long-Range Detection: Sharp’s longest-range analog sensor, suitable for obstacle avoidance and distance measurement where shorter sensors fall short .

• Triangulation Measurement Method: Uses IRED and PSD, making readings largely unaffected by target color, reflectivity, ambient temperature, or measurement duration .

• Analog Voltage Output: Single output connects directly to any ADC or comparator for threshold detection .

• Fast Update Rate: 38ms ± 10ms update period (approximately 26Hz sampling rate) for responsive real-time measurements .

• JST PH Connector: Standard 3-pin JST PH connector compatible with readily available cables; wires can also be soldered directly .

• Compact and Lightweight: Measures 44.5 × 18.9 × 21.6mm and weighs approximately 5g, suitable for small robots and drones .

• Low Average Current: 33mA typical consumption, though pulsed operation requires adequate power supply decoupling .

• RoHS-Compliant: Lead-free construction suitable for commercial and educational deployments .

Technical Specifications