Integrated Proximity and Ambient Light Sensors

Part Number Information
Part #: Price/Availability:
VCNL4010 Buy Now
VCNL4020 Buy Now
VCNL4020X01 Buy Now
VCNL3020 Buy Now

The VCNL4010, VCNL4020, and VCNL4020X01 are fully integrated proximity and ambient light sensors. Fully integrated means they contain the infrared emitter and photo detector for proximity, an ambient light sensor, a signal processing IC, and I2C communication interface. VCNL4020X01 is qualified for automotive applications. It has a maximum operating temperature of 105 ˚C. The VCNL3020 supports only proximity sensing; it does not contain an ambient light sensor. With full 16-bit resolution for both the proximity and ambient features, user-defined interrupt levels, and multiple packaging options, the VCNL portfolio will fulfill your requirements.  


  • Proximity function
    • 16-bit resolution
    • Excellent crosstalk immunity
    • Programmable LED drive current from 10 mA to 200 mA in 10 mA steps
    • Programmable measurement rate from 1 Hz to 250 Hz
    • Proximity distance up to 20 cm (8 in.)
    • Includes driver for an external emitter for increased range
  • Ambient light function
    • Built-in ambient light PIN photodiode with close to human eye sensitivity characteristic
    • 16-bit dynamic range for ambient light detection from 0.25 lux to 16 klux
    • 100 Hz and 120 Hz flicker noise rejection


  • Proximity guide for pick and place equipment
  • Monitor sleep / wake function for displays on ATMs and Vending machines
  • Touchless light switch
  • Refrigerator water / ice dispenser
  • Paper towel dispenser
  • Soap dispenser
  • Automatic toilet flushing
  • Automatic water faucet
  • Industrial door or latch switch
  • Smart phone display control
  • Digital camera display control