This is CJMCU 9930 APDS-9930 Digital Proximity And Ambient Light Sensor For Arduino. The APDS-9930 provides digital ambient light sensing (ALS), IR LED and a complete proximity detection system in a single 8 pin package. The proximity function offers plug and play detection to 100 mm (without front glass) thus eliminating the need for factory calibration of the end equipment or sub-assembly.

The proximity detection feature operates well from bright sunlight to dark rooms. The wide dynamic range also allows for operation in short distance detection behind dark glass such as a cell phone.

In addition, an internal state machine provides the ability to put the device into a low power mode in between ALS and proximity measurements providing very low average power consumption. The ALS provides a photopic response to light intensity in very low light condition or behind a dark faceplate.

Applications

1. Adjustable light mobile phone backlight
2. Notebook / display security
3. automatically enabled hands-free mode
4. Automatic menu pop up
5. Digital camera eye sensor.

Features :

1. Optical modules integrated with ALS, infrared LEDs and proximity detectors

2. Ambient Light Sensing (ALS)

• Approximate human visual response
• Programmable interrupt capability with upper and lower thresholds
• Up to 16-bit resolution
• High sensitivity operation behind dark glass
• 0.01lux low lumen performance

3. Proximity detection

• Fully calibrated to 100 mm detection
• Integrated infrared LED and synchronous LED driver
• Eliminates factory calibration of the proximity sensor

4. Programmable wait timer

• Wait for state power consumption – 90μA typical
• Programmable range from 2.7 ms to more than 8 seconds

5. I2C interface compatible

• Up to 400kHz (I2C fast mode)
• Dedicated interrupt pin.