ISL29013
Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt and I²C Interface

Key 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

Description

The ISL29013 is an integrated light sensor with I²C (SMBus Compatible) interface. It has an internal signed15-bit integrating type ADC designed based on the chargebalancing 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.

The ISL29013 supports a hardware interrupt that remains asserted low until the host clears it through I²C interface.

Designed to operate on supplies from 2.5V to 3.3V, the ISL29013 is specified for operation over the -40°C to +85°C ambient temperature range.

Applications

• Display and keypad backlight dimming for
• Mobile Devices: Smart phone, PDA, and GPS
• Computing devices: Notebook PC, UMPC webpad
• Consumer devices: LCD-TV, digital picture frame, and digital cameras
• Industrial and medical light sensing