The biggest advantage of this sensor is that it integrates an infrared emission tube, so there is no need of external LED support. No LED is sent inside the two-in-one sensor, so it needs an external LED. In addition, this sensor has integrated the transmitter/receiver and minimizes the design. There is no space limit in design and installation, and the requirements of structural part will be relatively simple. This sensor can be used in mobile phone, while it has two functions. One is it can sense the current ambient light (ALS), automatically adjust the backlight brightness to adapt to the ambient light according to software control. Another is proximity sensor (PROX), it uses the reflection of the internal LED infrared light and sensor built-in PD to determine the backlight state. Features: 1. Ambient Light Sensing, ProximityDetection, and IR LED in a Single OpticalModule 2. Ambient Light Sensing (ALS) ----Approximates Human Eye Response ----Programmable Analog Gain ----Programmable Integration Time ----Programmable Interrupt Function with Upper and Lower Threshold ----Up to 16 Bits Resolution ----Very High Sensitivity - Operates Behind Darkened Glass ----Up to 1,000,000:1 Dynamic Range 3. Proximity Detection ----Calibrated to 100mm Detection ----Eliminates Factory Calibration of Prox ----Programmable Number of IR Pulses ----Programmable Current Sink for the IR LED - No Limiting Resistor Needed ----Programmable Interrupt Function with Upper and Lower ThresholdD 4. Programmable Wait Timer ----Wait State - 65mA Typical Current ----Programmable from 2.72ms to 8 Seconds ----I2C Interface Compatible Up to 400 kHz (I2C Fast Mode) ----Dedicated Interrupt Pin ----3.94 mm y 2.4 mm y 1.35 mm Package ----Sleep Mode - 2.5 mA Typical Applications: 1. Cell Phone Backlight Dimming 2. Cell Phone Touch Screen Disable 3. Notebook/Monitor Security 4. Automatic Speakerphone Enable 5. Automatic Menu Popup