The ISL29035 is an integrated ambient and infrared light-to-digital converter with an I2C (SMBus compatible) interface. Its advanced self-calibrated photodiode array emulates human eye response with excellent IR rejection. The on-chip ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range select feature allows users to program the lux range for optimized counts/lux. For ambient light sensing, an internal 16-bit ADC has been designed based upon the charge-balancing technique. The ADC conversion time is nominally 105ms and is user-adjustable from 11μs to 105ms, depending on the oscillator frequency and ADC resolution. In normal operation, typical current consumption is 57μA. In order to further minimize power consumption, two power-down modes have been provided. If polling is chosen over continuous measurement of light, the auto power-down function shuts down the whole chip after each ADC conversion for the measurement. The other power-down mode is controlled by software via the I2C interface. The power consumption can be reduced to less than 0.3μA when powered down. The ISL29035 supports software brownout condition detection. The device powers up with the brownout bit asserted until the host clears it through the I2C interface. The ISL29035 supports a software and hardware interrupt that remains asserted until the host clears it through the I2C interface. Function of ADC conversion continues without stopping after an interrupt is asserted. Designed to operate on supplies from 2.25V to 3.63V with an I2C supply from 1.7V to 3.63V, the ISL29035 is specified for operation across the -40 °C to +85 °C ambient temperature range.

Features

  • Resolution: 16-bit ADC
  • Wide dynamic range: 1:4,200,000
  • Integrated noise reduction: 50Hz/60Hz
  • Close to human eye response with excellent IR/UV rejection
  • Shutdown modes: software and automatic
  • Programmable interrupt threshold with persistence filter
  • Supply current (typical): 57μA
  • Shutdown current (maximum): 0.51μA
  • I2C (SMB compatible) power supply: 1.7V to 3.63V
  • Sensor power supply: 2.25V to 3.63V
  • Operating temperature range: -40 °C to +85 °C
  • Small form factor package: 6 Ld 1.5mm x 1.6mm x 0.75mm ODFN

Applications

  • Mobile devices: Smartphones, PDAs, GPS
  • Computing devices: Notebook PCs, MacBooks, tablets
  • Consumer devices: LCD-TVs, digital cameras
  • Industrial and medical light sensing

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active HODFN Reel 3000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL29035 Datasheet Datasheet PDF 878 KB
PCNs & PDNs
PCN15010 - Additional assembly facility of the listed Intersil ODFN packaged products Product Change Notice PDF 76 KB
Other
PLC18009 - Q2 Standard EOL Notice Product Life Cycle Notice PDF 345 KB

Downloads

Title language Type Format File Size Date
Software
Eye-Safety Exposure Calculator Software & Tools - Others XLSX 35 KB

Boards & Kits

Part Number Title Type Company
ISL29035EVAL1Z Integrated Digital Light Sensor with Interrupt Evaluation Board Evaluation Renesas