TSL2550 digital light sensor

Converts Light Intensity to Digital Signal with a two wire SMBus Serial Interface or I2C (@100KHz)
Spectral Response approximates Human Eye
Companding A/D for Wide Dynamic Range
Low Active Power (1 mW typical)
Power Down Mode
SO-8 package (shown)
RoHS Compliant

The TSL2550 is a digital light sensor with a two-wire, SMBus serial interface. It combines two photodiodes and a companding analog-to-digital converter (ADC) on a single CMOS integrated circuit to provide light measurments over an effective 12-bit dynamic range. The ADC digital outputs of the two channels are used to obtain a value that approximates the human eye response in the commonly used unit of Lux.