Proximity Sensor With Interrupt, IRED, and I2C Interface


  • Integrated Module: infrared Emitter(IRED), Proximity Sensor(PS) and Signal Conditioning IC
  • Smallest Light Hole Opening Design
  • Immunity to Red Glow (940 nm)
  • Supply Voltage Range: 1.7 V to 3.6 V

VCNL36821S integrates a proximity sensor (PS), and an IRED into one small package. It incorporates photodiodes, amplifiers, and analog to digital converting circuits into a single chip by CMOS process. PS programmable interrupt features of individual high and low thresholds offer the best utilization of resource and power saving on the microcontroller.

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  • Package type: surface-mount
  • Dimensions (L x W x H in mm): 2.55 x 2.05 x 1.0
  • Interrupt function
  • Low power consumption I2C (SMBus compatible interface)
  • Floor life: 168 h, MSL 3, according to J-STD-020
  • Output type: I2C bus (PS)
  • Temperature compensation: -40 °C to +85 °C
  • Material categorization:
    • For definitions of compliance please visit the official web page:


  • Immunity to red glow (940 nm IR LED)
  • Programmable IR LED sink current
  • Intelligent cancellation to reduce cross-talk phenomenon
  • Smart persistence scheme to reduce PS response time
  • Low power consumption mode


  • Programmable interrupt function for PS with upper and lower thresholds
  • Adjustable persistence to prevent false triggers for PS
  • Handheld Devices
  • Consumer Devices
  • Industrial Applications
  • Earphone
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