TSL2563

· 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 (TSL2562) or I2C (TSL2563) 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 2.5-V Input Voltage and 1.8-V Digital Output
· Low Active Power (0.6 mW Typical) with Power Down Mode
· RoHS Compliant

Supply voltage, V_DD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8 V
Digital output voltage range, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . −0.5 V to 3.8 V
Digital output current, I_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . −1 mA to 20 mA
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to 85
ESD tolerance, human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltages are with respect to GND.

The TSL2562 and TSL2563 are low-voltage light-to-digital converters that transform light intensity to a digital signal output capable of direct I2C (TSL2563) or SMBus (TSL2562) 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  rradiance 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 TSL2562 device permits an SMB-Alert style interrupt, and the TSL2563 device supports a traditional level style interrupt that remains asserted until the firmware clears it.

While useful for general purpose light sensing applications, the TSL2562/TSL2563 devices are designed particularly for display panels (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination based upon ambient lighting conditions. Illuminance information can further be used to manage exposure control in digital cameras. The TSL2562/TSL2563 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel televisions, cell phones, and digital cameras. In addition, other applications include street light control, security lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.