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Vishay VCNL36825T Proximity Sensor integrates a high-power Vertical-Cavity Surface-Emitting Laser (VCSEL), a photodiode for proximity measurement, and an Analog-to-Digital Converter (ADC) in a single, compact package. With a range up to 200mm, this stand-alone component simplifies the use and design-in of a proximity sensor as no mechanical barriers are required to optically isolate the emitter from the detector.
The Vishay VCNL36825T is offered in a miniature, surface mount, 2.0mm x 1.25mm leadless package (LLP) with a low 0.5mm profile. The device is designed to meet the extremely tight space requirements of True Wireless Stereo (TWS) earphones, smartphones, and other handheld applications. The narrow emission angle of the VCSEL enables a limited field of view which is advantageous for applications requiring multiple touchless switches.
With the standard I2C bus serial digital interface, access to the proximity signal is easy to attain. The programmable interrupt function offers wake-up functionality for the microcontroller when a proximity change occurs. This function reduces processing overhead by eliminating the need for continuous polling.
