Broadcom APDS-9309 Miniature Ambient Light Photo Sensor

Broadcom APDS-9309 is a low-voltage digital ambient light photosensor that converts light intensity to digital signal output capable of a direct I2C-bus interface. Each device contains one broadband photodiode (visible plus infrared) and one infrared photodiode. Two integrating ADCs convert the photodiode currents to a digital output. This represents the irradiance measured on each channel. This digital output can be fed to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human-eye response.


  • Approximate the human-eye response
  • Precise Illuminance measurement under diverse lighting conditions
  • Programmable Interrupt Function with User-Defined Upper and Lower Threshold Settings
  • 16-Bit Digital Output with I2C Fast-mode at 400kHz
  • Programmable Analog Gain and Integration Time
  • RoHS Compliant
  • Miniature ChipLED Package
    • Height – 0.65 mm
    • Length – 2.00 mm
    • Width – 2.00 mm
  • 50/60Hz Lighting Ripple Rejection
  • Low 2.5V Input Voltage and 1.8V Digital Output
  • Low Active Power (0.6mW Typical) with Power Down Mode


  • Detection of ambient light to control display backlighting
    • Mobile devices – Cell phones, PDAs, PMP
    • Computing devices – Notebooks, Tablet PC, Keyboard
    • Consumer devices – LCD Monitor, Flat-panel TVs, Video Cameras, Digital Still Camera
  • Automatic Residential and Commercial Lighting Management
  • Automotive instrumentation clusters.
  • Electronic Signs and Signals
Zveřejněno: 2015-02-10 | Aktualizováno: 2022-03-11