The ISL29012 is an integrated light sensor with I2C (SMBus Compatible) interface. It has an internal signed 15-bit integrating type ADC designed based on the charge-balancing A/D conversion technique. This ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range select feature allows the user to program the lux range for optimized counts/lux. In normal operation, power consumption is typically 250µA.

Furthermore, a power-down mode can be controlled by software via the I2C interface, reducing power consumption to less than 1µA.

Features

• Range Select Via I2C

   - Range 1 = 0.5 lux to 2,000 lux

   - Range 2 = 0.5 lux to 8,000 lux

   - Range 3 = 0.5 lux to 32,000 lux

   - Range 4 = 0.5 lux to 128,000 lux

• Human Eye Response (540nm Peak Sensitivity)

• Temperature Compensated

• Signed 15-bit Resolution

• Adjustable Resolution: Up to 20 Counts per lux

• User-programmable Upper and Lower Threshold Interrupt

• Simple Output Code, Directly Proportional to lux

• IR + UV Rejection

• 50Hz/60Hz Rejection

• 2.5V to 3.3V Supply

• 6 Ld ODFN (2.1mmx2mm)

• Pb-Free (RoHS compliant)

• Operating Temperature Range: -40°C to +85°C

• I2C and SMBus Compatible

Applications

• Display and Keypad Backlight Dimming

   - Mobile Devices: Smart phone, PDA, and GPS

   - Computing Devices: Notebook PC, UMPC Web Pod

   - Consumer Devices: LCD-TV, Digital Picture Frame and Digital Cameras

• Industrial and Medical Light Sensing