Vishay's latest proximity and ambient light sensors increase detection range to 1.5 meters

Tuesday, July 17, 2018

This device saves space and uses FiltronTM technology to eliminate background light effects in smart home, industrial and office products.

Recently, Vishay Intertechnology, Inc. announced the launch of a new high sensitivity proximity and ambient light sensor - VCNL4200. The sensor uses FiltronTM technology with a detection range of up to 1.5 meters and is available in a small 8mm x 3mm x 1.8mm surface mount package. The Vishay Semiconductors VCNL4200 3-in-1 sensor features a high-power infrared emitter, proximity and ambient light photodetectors, a signal processing IC, and a 12-bit/16-bit ADC. It also provides an interrupt function and supports an I2C bus communication interface for smart homes. Industrial and office products.

The VCNL4200's detection range is 50% higher than previous generation devices and can be used in printers, copiers and household appliances to activate displays when objects are detected; anti-collision of toys and robots; proximity detection in offices, corridors and public buildings And lighting control; start toilet fixtures; detect free parking spaces in the parking lot and garage. The sensors integrate the circuitry required for these applications without the need for additional gratings or the alignment of the IR emitter and photodiode. The small size of the device saves space and gives engineers the flexibility to design where the sensor is placed and placed.

The VCNL4200's ambient light and proximity sensors operate in parallel, with each sensor having programmable interrupts that support high and low thresholds, allowing the sensor to wake the application from low-power modes, reducing overall application power consumption. Using Filtron technology, the device's spectral sensitivity to ambient light is close to the human eye, while also eliminating the effects of background light.

The 16-bit ADC allows the sensor to be unaffected by the strobe of the fluorescent lamp, achieving good temperature compensation over the -40°C to +85°C temperature range. The transmitter has a peak wavelength of 940 nm and no visible "red tail".

The device's supply voltage is 2.5V to 3.6V, and the I2C bus voltage is from 1.8V to 3.6V. The sensor is available in a lead-free 10pin QFN package and is RoHS and Vishay green, halogen free.

Author:Brittany Antonia (The author of article owns the copyright.)