The TMF8805 is a true direct time-of-flight sensor and processing system in a highly integrated modular package. It integrates a 940nm Class 1 eye-safe VCSEL, a high-sensitivity SPAD array, precision time-to-digital converter and a low-power microcontroller sub-system.
The embedded histogram algorithm can detect cover glass and objects behind glass, selecting the object with highest SNR while compensating for dirt and smudges on cover glass. This device is ideally suited to world-facing camera LDAF applications, user presence detection, collision avoidance, object detection and other applications in the range of 2 to 250cm.
Features
- 20mm to 2500mm distance sensing at 30Hz
- Direct ToF technology with high sensitivity SPAD detection
- Delivers high SNR, wide dynamic range, and no multi-path reflections
- Enables dark and sunlight environment distance measurement within ±5%
- Provides best-in-class resolution ranging mode detection sensing
- 100k lux to 0 lux ambient light immunity
- Enables accurate distance measurements
- Provides high accuracy, greater distance between cover glass, dynamic cover glass calibration, dirt and smudge removal, and crosstalk compensation
- Eye-safety circuitry stops VCSEL driver if VCSEL fault occurs
- Optical filters with algorithm support enable high ambient light resilience
- Fast Time-to-Digital Converter (TDC) architecture
- Sub-nanosecond light pulse
- On-chip histogram processing
- 940nm VCSEL Class 1 Eye Safety
- High-performance on-chip sunlight rejection filter and algorithm
- 2.7V to 3.3V supply voltage
- 1.8V I2C interface
- -30°C to +70°C operating temperature range
- 8-pin 2.2mm x 3.6mm x 1.0mm OLGA package
Additional features
- 20 – 2500mm distance sensing @ 30Hz
- 940nm VCSEL Class 1 Eye Safety
- High-performance on-chip sunlight rejection filter and algorithm
- Industry’s smallest modular OLGA 2.2 x 3.6 x 1.0 mm package
Block Diagram
more information: https://ams.com/en/tmf8805
