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Artificial intelligence enabler, high performance 8x8 multizone Time-of-Flight (ToF) sensor

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Product overview


The VL53L8CH is the perfect Time-of-Flight sensor enabling AI applications, with enhanced performance under ambient light with a wide 65° diagonal FoV. The compact and normalized histogram (CNH) innovative data output is specially designed for artificial intelligence (AI) applications requiring multizone raw data from a high performance multizone ToF sensor.

The IR signal measured in each zone is sent as raw data to the host through each bin of the histogram. Highly configurable, the user can program the resolution of the VL53L8CH up to 64 zones (8x8 zones), modify the histogram resolution up to 128 bins, and define the bin width. All this CNH data is transmitted to the host through I²C or SPI, up to 30 Hz, in addition to the standard processed data of the ToF sensor (ranging distance, signal level, reflectance etc.).

The CNH data transform STMicroelectronics' Time-of-Flight ranging sensor into a versatile optical sensor, which can enable endless AI-based applications. This CNH raw data sent to the host, on top of the standard ranging data, opens the door to many new applications beyond simple distance measurements. From solid material (carpet, wood, glass, mirror...) to gas or liquid (water, oil, chemical...), it becomes possible to detect the location and the size of a cup in a coffee machine or beverage dispenser, to sense the floor material for robotics, and develop advanced shape, motion, or hand posture recognition.

The VL53L8CH integrates a powerful new generation VCSEL, and two advanced metasurface lenses. The integrated VCSEL emits fully invisible 940 nm IR light, which is Class 1 certified and safe for the eyes.

  • All features

    • Compact and normalized histogram (CNH) data output for AI
      • Multizone data output up to 64 separate zones
      • Histogram output with signal count for each bin
      • Histogram size programmable up to 128 bins
      • Minimum bin width down to 37 mm
      • Maximum frequency up to 30 Hz through I²C or SPI
      • Ambient IR light level reported for each zone
      • All Time-of-Flight (ToF) processed data (distance, signal amplitude, reflectance etc.) are available, in addition to CNH
    • Highly configurable CNH in order to meet user expectations
      • 64 zones with 18 bins at 15 Hz
      • 32 zones with 36 bins at 15 Hz
      • 16 zones with 48 bins at 25 Hz
    • Wide ToF sensor with 65° field of view (FoV)
      • 45° x 45° square FoV (65° diagonal)
      • Autonomous low-power mode with interrupt programmable thresholds to wake up the host
      • Up to 400 cm ranging
      • Motion indicator for each zone to detect if targets have moved and how they have moved
    • Fully integrated miniature module
      • Emitter: 940 nm invisible-light vertical-cavity surface-emitting laser (VCSEL)
      • Diffractive optical elements (DOE) on both transmitter and receiver enabling square FoV
      • Receiving array of single photon avalanche diodes (SPADs)
      • Low-power microcontroller running firmware
      • Size: 6.4 x 3.0 x 1.75 mm
    • Easy integration
      • Single reflowable component
      • Requires 1.8 V core supply and 3.3 V AVDD supply
      • Optional 1.2 V or 1.8 V IOVDD interface voltage levels
      • I²C (up to 1 MHz) or SPI (up to 3 MHz) interface
      • Compatible with a wide range of cover glass materials
      • Driver compatible with VL53L7CH
      • Pin-to-pin compatible with VL53L8CX

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STMicroelectronics - VL53L8CH

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
OPT. LGA 6.40X3.0 Industrial Ecopack2



OPT. LGA 6.40X3.0

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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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