Vishay OPTO Squad

Designing the VCNL4100 into an Application



The VCNL4100 is a fully integrated proximity and ambient light sensor. It combines an infrared emitter and photodiode for proximity measurement, ambient light sensor (ALS), and signal processing IC in a single package with an 8-bit ADC. The device provides ambient light sensing to support conventional backlight and display brightness auto-adjustment, and proximity sensing to recognize objects up to a distance of 1 m (40″).

This stand-alone component greatly simplifies the use and design-in of a proximity sensor (PS) in consumer and industrial applications, because the embedded IRED as well as photodiode are exactly matched to each other. The VCNL4100 features a miniature, surface-mount 8.0 mm by 3.0 mm leadless package (LLP) with a height of 1.8 mm. The device is designed specifically to meet the requirements for applications where objects need to be identified at far distances.

Through its standard I2C bus serial digital interface, it allows easy access to a “proximity signal” and “light intensity” measurements. The programmable interrupt function offers wake-up  functionality for the microcontroller when a proximity event or ambient light change occurs, which reduces processing overhead by eliminating the need for continuous polling.

Click here to download the full application note.


2 comments on “Designing the VCNL4100 into an Application

  1. Ali Pala
    July 20, 2016

    I would like to try this sensor our projects. Actually We are using vcnl4020 .
    But Couldn’t find 4100 on digikey or other supplier. Could you please advice how can we get some sample ?

    • vishayopto
      July 20, 2016

      Hi Ali, thanks for visiting the site and we’d love to get you some samples of the VCNL4100. Regional Marketing will be contacting you shortly.

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This entry was posted on July 18, 2016 by in Application Note, Optical Sensors, Proximity Sensors.
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