News from Avago Technologies09/08/2010
APDS-9801 is a module that integrates functions of an Analog ambient light sensor (ALS) and a proximity sensor (PS). The sensor has four chips in one small package: an ambient light sensor IC, proximity sensor signal conditioning circuitry and a proximity sensor that includes both an emitter and detector. The Analog ambient light sensor has current output, with spectral response close to the CIE standard Photopic observer. The proximity sensor IC has a LED driver and receiver circuit with digital count output, featuring excellent ambient light cancellation capability. With the built-in LED, the proximity sensor is able to sense the proximity of an object, such as finger or head to a portable device. Ambient light sensors can be used to control the brightness of display backlighting by detecting the ambient light illuminance level. Proximity sensor technology make possible applications where detection or proximity of a user’s head in relationship to display will turn off/on the keypad and LCD backlight. The combination of ambient light sensors and proximity sensors in one module make it ideal for portable devices, such as mobile phone, PDA and notebooks.
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