The ISL29038 is a low power Ambient Light Sensor (ALS) and proximity (PROX) sensor. It has a built-in IR-LED driver for proximity function. The ALS function measures the amount of light (in the visible spectrum) incident on the ISL29038.

The ALS function has a programmable ambient IR-rejection, which allows fine tuning of light source variations and is ideal for light sensor applications under dark protective glass. The ALS provides a 12-bit measurement. A passive optical filter removes unwanted wavelengths (IR or Ultraviolet) to ensure accurate ALS measurement.

Features

• Ideal for applications under dark or tinted glass

• Enhanced ambient sunlight rejection to 40k Lux

• Programmable proximity sleep time between proximity measurements optimizes power consumption

• Hardware interrupt - no polling required

• Programmable IR compensation to fine tune ALS performance for various glass compositions

• Up to 4000 Lux, four selectable ALS ranges

• Programmable IR LED drive current to 250mA

• Operates from 2.25V to 3.63V VDD

• Power-down IDD, typical 0.2µADC

• Tiny 2.1x2.0x0.7 (mm) ODFN package

Applications

• Display dimming and adjustment

- Mobile devices: smart phones, PDA, GPS

- Computing: monitors, laptops, notebooks

- Picture frames, tablet_PCs, LCD_TV

• Object detection

- Touchscreen disabling

- Smart power-saving