Sharp GP2D120XJ00F Analog Distance Sensor 4-30cm

Detection range: 1.5" to 12"

The GP2D120 is the shortest-range Sharp analog distance sensor we carry, featuring a detection range of 1.5" to 12". The shorter range gives higher resolution measurements, and the lower minimum detection distance makes the sensor great for detecting very close objects. The distance is expressed as an analog voltage, making the sensor very easy to use.

The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital converter for taking distance measurements, or the output can be connected to a comparator for threshold detection. The detection range of this version is approximately 4 cm to 30 cm (1.5" to 12"); a plot of distance versus output voltage is shown below.

The GP2D120 uses a 3-pin JST connector that works with our 3-pin JST cables for Sharp distance sensors (not included). It is also simple to solder three wires to the sensor where the connector pins are mounted. When looking at the back, the three connections from left to right are power, ground, and the output signal.

Features:

• Operating voltage: 4.5V to 5.5V
• Average current consumption: 33mA typical
• Distance measuring range: 1.5" to 12" (4cm to 30cm)
• Output type: Analog voltage
• Output voltage differential over distance range: 2.3V typical
• Response time: 38 ± 10ms
• Package size: 1.16" x 0.5" x 0.53" (29.5mm x 13.0mm x 13.5mm)
• Weight: 0.12 oz. (3.5 grams)
• Use with JST connector cable (Not included)

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