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STMicroelectronics VL53L3CX Time-of-Flight Ranging Sensor

STMicroelectronics VL53L3CX Time-of-Flight Ranging Sensor embeds ST’s third-generation FlightSense technology. The sensor combines a high-performance proximity and ranging sensor, with multi-target distance measurements and automatic smudge correction. The miniature reflowable package integrates a single-photon avalanche diode (SPAD) array. Physical infrared filters achieve the best ranging performance in various ambient lighting conditions, with a wide range of cover glass windows. The VL53L3CX combines the benefits of a high-performance proximity sensor, with excellent short distance linearity, together with ranging capability up to 3m.

Features

  • Fully integrated miniature module
    • Emitter: 940nm invisible laser (VCSEL) and its analog driver
    • Low-power microcontroller running advanced digital firmware
    • Size: 4.4mm x 2.4mm x 1mm
  • Fast, accurate distance ranging
    • Histogram based technology
    • Up to 300cm+ detection with a full field of view (FoV)
    • Immune to cover glass cross-talk and fingerprint smudge at long distance with direct ToF
    • Dynamic fingerprint smudge compensation
    • Short distance, high accuracy linearity
    • Multi-target detection and distance measurement
    • Typical full FoV: 25°
  • Easy integration
    • Reflowable component
    • Part-to-part or generic shape crosstalk calibration available
    • Single power supply
    • Works with many types of cover glass materials
    • I2C interface (up to 1MHz)
    • Xshutdown (reset) and interrupt GPIO to optimize the ranging operation
    • C and Linux full set of software drivers for turnkey ranging

Applications

  • Service robots and vacuum cleaners (wall following and fast obstacle detection)
  • Sanitary (robust user detection whatever the target reflectance)
  • Smart buildings and smart lighting (user detection to wake up devices)
  • IoT (user and object detection)
  • Laser-assisted autofocus (AF): enhances the camera AF system speed and robustness, especially in difficult scenes (low light and low contrast); ideal companion for phase-detection autofocus (PDAF) sensors
  • Video focus tracking assistance

Videos

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STMicroelectronics VL53L3CX Time-of-Flight Ranging Sensor

  • 7 Experts on Designing Commercially Successful Smart Home Devices

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Block Diagram - STMicroelectronics VL53L3CX Time-of-Flight Ranging Sensor

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STMicroelectronics VL53L3CX Time-of-Flight Ranging Sensor