STMicroelectronics VL53L8CH Time-of-Flight (ToF) Sensor

STMicroelectronics VL53L8CH Time-of-Flight (ToF) Sensor is an 8×8 multizone sensor that offers improved performance under ambient light. This sensor features a wide 65° diagonal Field of View (FoV) and Compact and Normalized Histogram (CNH) innovative data output for AI applications. The VL53L8CH ToF sensor also features 2cm to 400cm per zone range, up to 60Hz sample rate, and -30°C to 85°C operating temperature range. This sensor integrates a Vertical-Cavity Surface-Emitting Laser (VCSEL), which emits Class 1 certified and fully invisible 940nm IR light. The VL53L8CH ToF sensor is available in 6.4mm x 3mm x 1.75mm dimensions in an optical LGA16 package.

The VL53L8CH ToF sensor is compatible with a driver compatible with VL53L7CH and pin-to-pin compatible with VL53L8CX. This sensor is used in AI applications that require multizone raw data, cup rim detection for coffee machines, gesture motion, hand posture recognition, and floor sensing for robotics and vacuum cleaners.

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
- Up to 128 bins histogram programmable size
- Minimum bin width down to 37mm
- Up to 30Hz maximum frequency through I²C or SPI
- Ambient IR light level reported for each zone
- All Time-of-Flight processed data (distance, signal amplitude, and reflectance) are available
Wide ToF sensor with 65° FoV:
- 45° x 45° square FoV
- Autonomous low-power mode with interrupt programmable thresholds to wake up the host
- Up to 400cm ranging
- Motion indicator for each zone to detect target movement
Highly configurable CNH to meet user expectations:
- 64 zones with 18 bins at 15Hz
- 32 zones with 36 bins at 15Hz
- 16 zones with 48 bins at 25Hz

Fully integrated miniature module:
- 940nm 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
- 6.4mm x 3mm x 1.75mm dimensions
Easy integration:
- Single reflowable component
- Requires 1.8V core supply and 3.3V AV_DD supply
- Optional 1.2V or 1.8V IOV_DD interface voltage levels
- I²C (up to 1MHz) or SPI (up to 3MHz) interface
- Compatible with a wide range of cover glass materials
- Driver compatible with VL53L7CH
- Pin-to-pin compatible with VL53L8CX

Applications

AI applications that require multizone raw data
Cup rim detection for coffee machines and beverage dispensers
People counting for smart buildings and smart homes

Floor sensing for robotics and vacuum cleaners
Gesture motion and hand posture recognition

STMicroelectronics VL53L8CH Time-of-Flight (ToF) Sensor

Features

Applications

System Block Diagram

Application Schematic Diagrams

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