Posted in | News | Energy Sensor

Vishay Intertechnology Introduces VCNL4020 Sensor

Vishay Intertechnology has launched the VCNL4020 sensor which is a completely integrated proximity and ambient light optical sensor with height of 0.8 mm. The VCNL4020 comprises a photo-pin-diode for proximity, a signal processing IC, an IR emitter and an ambient light detector.


The VCNL4020 is also provided with a 16-bit ADC in a small rectangular leadless (LLP) package. The VCNL4020 comprises the following features:

  • The VCNL4020 simplifies the sensor and window placement in a range of industrial and consumer applications.
  • The I2C bus communication interface is supported by the VCNL4020.
  • The VCNL4020 has an interrupt function that allows independent working of the sensor and it also enables customers to reduce their power consumption and software effort by eradicating polling communication traffic between the microcontroller and the sensor.
  • The VCNL4020 controls the brightness of the display and keypad with its integrated ambient light function and saves power by switching off the display backlight.
  • Requirement for additional optical alignment and light barriers of photo diode and the IR emitter is eliminated by the VCNL4020.
  • A proprietary technology is used by the VCNL4020 that allows design engineers to easily locate the sensor.
  • The VCNL4020 can be installed on the main PCB because of its 16-bit resolution, thus ensuring better cross talk immunity.
  • The VCNL4020 operates at any air gap and depth below a glass window in order to provide extra flexibility.
  • A programmable LED drive current from 10 mA to 200 mA is provided by the VCNL4020 in 10 mA steps.
  • An integrated external emitter driver in the VCNL4020 enables increasing the proximity sensor’s range.
  • The infrared signal is modulated by the VCNL4020 in order to provide better ambient light suppression.
  • The VCNL4020 provides 16 bit dynamic range sensitivity with the help of an inbuilt ambient light photo-pin-diode. This 16 bit dynamic range is used for detecting ambient light from 0.25 lux to 16 klux.
  • 120 Hz and 100 Hz of flicker noise rejection is offered by the VCNL4020.

Besides the above mentioned features, the VCNL4020 provides I2C bus voltage range from 1.7 V to 5 V and a supply voltage range of 2.5 V to 3.6 V. The sensor works in temperature ranging from - 25 °C to + 85 °C and offers a Moisture Sensitivity Level (MSL) of 4.


Disclaimer: The views expressed here are those of the author expressed in their private capacity and do not necessarily represent the views of Limited T/A AZoNetwork the owner and operator of this website. This disclaimer forms part of the Terms and conditions of use of this website.


Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Vishay Intertechnology, Inc.. (2019, February 24). Vishay Intertechnology Introduces VCNL4020 Sensor. AZoSensors. Retrieved on December 01, 2023 from

  • MLA

    Vishay Intertechnology, Inc.. "Vishay Intertechnology Introduces VCNL4020 Sensor". AZoSensors. 01 December 2023. <>.

  • Chicago

    Vishay Intertechnology, Inc.. "Vishay Intertechnology Introduces VCNL4020 Sensor". AZoSensors. (accessed December 01, 2023).

  • Harvard

    Vishay Intertechnology, Inc.. 2019. Vishay Intertechnology Introduces VCNL4020 Sensor. AZoSensors, viewed 01 December 2023,

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type