Ambient Light Sensor (ALS)
TAOS Inc.`s Ambient Light Sensor combine a broadband photodiode (350 nm to 1100 nm) with a visible light blocking photodiode in a single CMOS integrated circuit. With integrated analog-to-digital conversion circuitry, data is output via a serial interface using two standard protocols: SMBus and I2C. Light intensity in Lux (i.e. illuminance) can be easily calculated using the output from both photodiodes without the need of using an expensive optical filter. In addition, TAOS Ambient Light Sensor can be used in any general application where a high resolution light sensor is required using a two-wire digital interface. This family of devices is ideal for use with notebooks, tablets, flat-panel televisions, cell phones, and digital cameras. Other applications include street light control, security lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.


 
Device Min. Voltage Max. Voltage Min. Lux Max. Lux DataSheet  
  TSL2771 2.4 3.6     TSL2771-E27.pdf View Details & Downloads