Hot-selling and scarce ISL29038IROZ-T7 Low Power Ambient Light and Proximity Sensor DFN8 spot stock

Product Descriptions

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.

The proximity function includes a new offset adjustment to  compensate for the IR light reflected off the inside of the  protective glass cover and back to the ISL29038 sensor. This  offset adjustment allows the sensor to compensate for these  internal reflections and preserve the dynamic range of the  proximity measurement.

The built-in current-driver pulses an external infrared LED at a  programmed current for 90µs. The infrared light that is  reflected and received by ISL29038 is digitized by an 8-bit  ADC. The proximity sensor also has a passive optical filter  designed to pass IR and reject visible wavelengths.​

The ISL29038 provides a hardware pin to indicate an interrupt  event. The interrupt pin saves power as the host microcontroller  can ‘wake-up’ on an interrupt event and does not need to poll  the device for an interrupt event. The interrupt generator is  user configurable and provides several options for ALS and  PROX trigger configurations. The ISL29038 supports an  SMBus compatible I2C interface for configuration and control.

Product 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

Product 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

Product Specification

Product Photos

For more product information, please download the PDF