Description
The TSL2560 and TSL2561 are light-to-digital converters that transform light intensity to a digital signal output capable of direct I2C (TSL2561) or SMBus (TSL2560) interface. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near-photopic response over an effective 20-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2560 device permits an SMB-Alert style interrupt, and the TSL2561 device supports a traditional level style interrupt that remains asserted until the firmware clears it.

● Approximates Human Eye Response to
   Control Display Backlight and Keyboard
   Illumination
● Precisely Measures Illuminance in Diverse
   Lighting Conditions Providing Exposure
   Control in Cameras
● Programmable Interrupt Function with
   User-Defined Upper and Lower Threshold
   Settings
● 16-Bit Digital Output with SMBus (TSL2560)
   or I2C (TSL2561) Fast-Mode at 400 KHz
● Programmable Analog Gain and Integration
   Time Supporting 1,000,000-to-1 Dynamic
   Range
● Available in Ultra-Small 1.25 mm  1.75 mm
   Chipscale Package
● Automatically Rejects 50/60-Hz Lighting
   Ripple
● Low Active Power (0.75 mW Typical) with
   Power Down Mode
● RoHS Compliant