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Vishay Semiconductors VCNL36829UM Proximity Sensor

Vishay Semiconductor VCNL36829UM Proximity Sensor combines a vertical-cavity surface-emitting laser (VCSEL), photodiode, and application-specific integrated circuit (ASIC) within a small, ultra-thin package. The VCNL36829UM has been developed for proximity detection applications, offering several advanced features, including dual slave addresses, low power consumption, and a compact package design with an isolation wall for optimal signal-to-noise ratio performance, along with the flexibility of mechanical design. Additionally, given the typical rated supply voltage of 1.8V to minimize power consumption, the Vishay Semiconductor VCNL36829UM is designed for battery-powered applications.

Features

  • Transparent mold with an isolation wall package
  • 1.6mm x 1.0mm x 0.35mm (LxWxH) dimensions
  • Integrated modules include a VCSEL and a proximity sensor (PS)
  • Support for both 1.2V and 1.8V I2C I/O with 1.8V supply voltage
  • I2C interface up to 1MHz (fast mode plus)
  • Present on I3C bus (spike filter implemented)
  • Low power consumption with 5μA idle current
  • Small package allows a design with a small window size
  • Smart dual I2C slave address in one package
  • Immunity to red glow (940nm VCSEL)
  • Programmable IVCSEL sink current
  • Intelligent cancellation to reduce the cross-talk phenomenon
  • Smart persistence scheme to reduce measurement response time
  • Interrupt functionality

Applications

  • True wireless stereo (TWS) earbuds
  • VR/AR headsets and smart glasses
  • Smart wearables and IoT devices
  • Touchless buttons/dispensing

Block Diagram

Block Diagram - Vishay Semiconductors VCNL36829UM Proximity Sensor
Published: 2026-01-05 | Updated: 2026-01-16