The ISL29101 is a low power ambient light-to-voltage optical sensor combining a photodiode array, a current amplifier and a micropower operational amplifier on a single monolithic IC. Similar to the human eye, the photodiode array has a peak response at 550nm and spans from 400nm to 600nm, rejecting UV light and IR light. The output voltage is proportional to the visible light intensity from 0.5 lux up to 10,000 lux. However, the input luminance range can go up to 30,000 lux with some compromise in linearity. A dark current compensation circuit aids the photodiode array to minimize temperature-dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels. Housed in an ultra-compact surface mount 2mm x 2.1mm ODFN clear plastic package, this device is excellent for power saving control functions in cell phones, PDAs, and other handheld applications.


  • 0.5 lux to 10,000 lux range
  • 1.8V to 3.3V supply range
  • Low supply current
  • Fast response time
  • Excellent linearity of output voltage vs. light intensity
  • Close to human eye response
  • Good IR rejection
  • Internal temperature compensation
  • Operating temperature range -40 °C to +85 °C
  • Ultra-compact surface mount package
  • Pb-free (RoHS compliant)


  • Display and keypad dimming for:
    • Mobile devices: Smartphones, wearables, PDAs, GPS
    • Computing devices: Notebooks PCs, MacBooks, tablets
    • Consumer devices: LCD-TVs, digital cameras
  • Industrial, home automation and medical light sensing

Product Options

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


Title language Type Format File Size Date
Datasheets & Errata
ISL29101 Datasheet Datasheet PDF 833 KB
Eye-Safety Exposure Calculator Software & Tools - Other XLSX 35 KB
PCN21021 - Introduce alternate assembly facility of the listed Renesas ODFN packaged products Product Change Notice PDF 138 KB
PCN12015 - Moisture Sensitivity Level Change for the Listed Intersil 6-lead ODFN Packaged Products Product Change Notice PDF 112 KB
PCN10053 - Alternate Manufacturing Site for Assembly of Intersil ODFN Packaged Products - Hana Microelectronics Public Co., Ltd. Lamphun, Thailand Product Change Notice PDF 95 KB
PLC18009 - Q2 Standard EOL Notice Product Life Cycle Notice PDF 345 KB


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

Boards & Kits

Part Number Title Type Company
ISL29101IROZ-EVALZ Low-Light Optimized Analog Output Sensors Evaluation Board Evaluation Renesas