ams OSRAM Direct Time-of-Flight Technology
Offering precise distance measurement up to 5 meters
Housed in a compact fully integrated module, ams OSRAM features many direct time-of-flight (dToF) sensors available in both single and multi-zone configurations.
These dToF sensors provide solutions for a wide range of distance measurement applications including Laser Detect Auto Focus (LDAF) for mobile, human presence detection for enhanced security and power saving in computing, electronic locks & authentication systems and obstacle detection and collision avoidance for home and industrial robots.
ams OSRAM direct time-of-flight (dToF) sensors are based on proprietary SPAD (Single Photon Avalanche Photodiode) pixel design and time-to-digital converters (TDCs) which have an extremely narrow pulse width. They measure in real time the direct time-of-flight (dToF) of a 940nm VCSEL Vertical Cavity Surface Emitting Laser) emitter’s infrared ray reflected from an object.
ams OSRAM direct time-of-flight (dToF) technology for world-facing mobile and XR wearables aims to achieve higher range and lower power consumption than other implementations. To minimize integration effort for mobile device OEMs, our 3D dToF system provides a complete technology stack – from optical sensing through to scene reconstruction and integration with RGB camera.
Featured Products
TMF8828
The TMF8828 is a direct time-of-flight (dToF) sensor in a single modular package with associated VCSEL. The dToF device is based on SPAD, TDC and histogram technology and achieves 5000 mm detection range.
Features - Modular package - 2.0 mm x 4.6 mm x 1.4 mm
- 63º FoI/FoV
- TMF8828: Multizone with 3x3, 4x4, 3x6 and 8x8 zones
- TMF8821: Multizone with 3x3, 4x4 and 3x6 zones
- TMF8820: Multizone with 3x3 zones
- Time-to-Digital Converter (TDC) Direct Time-of-Flight Measurement
- Single Photon Avalanche Photodiode (SPAD) Histogram based architecture
- Dynamic cover glass calibration
- Reliable operation under demanding use cases
- Reference SPAD
- Distance and signal quality reported
- Fast VCSEL driver with protection
- I3C tolerant - operate on a shared I²C / I3C bus
- 141 mW power consumption at 30 Hz operation 8 µA power consumption standby current (keep memory)
- 2 µA power-down current consumption (EN=0)
| Benefits - Enable new applications like click to focus, object tracking, presence detection
- Within ±3% / ±10 mm of measurement (accuracy); no multipath and no multiple object problems as for iToF
- Better accuracy detects reliably closest object
- Minimum distance 10 mm Maximum distance 5000 mm
- No complex calibration
- Compensates for dirt on glass
- Improved accuracy over temperature and life
- Make better decisions
- Class 1 eye safe
- Integration flexibility
- Longer battery life
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Applications - Distance measurement for camera autofocus - Laser Detect Autofocus - LDAF (mobile phone)
- Presence detection (computing and communication)
| - Object detection and collision avoidance (robotics)
- Light curtain (industrial)
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TMF8805
The TMF8805 is a time-of-flight (TOF) sensor in a single modular package with associated VCSEL. The TOF device is based on SPAD, TDC and histogram technology. The device achieves 2500mm detection range.
Features - Modular package - 2.2 mm x 3.6 mm x 1.0 mm
- No influence on multi object reflections
- Time-to-Digital Converter (TDC)
- Direct Time-of-Flight Measurement
- Single Photon Avalanche Photodiode (SPAD) Histogram based architecture
- Dynamic cover glass calibration
- Reliable operation under demanding use cases
- Reference SPAD
- Distance and signal quality reported
- Fast VCSEL driver with protection
- 27 mA power consumption at 30 Hz operation 0.26 µA power-down current consumption (EN=0)
| Benefits - Small footprint fits in the mobile phone bezel
- Detecting central closest objects
- Within 5 % of measurement (accuracy); no multipath and no multiple object problems as for iToF
- Better accuracy detects reliably closest object
- Minimum distance 20 mm
- Maximum distance 2500 mm
- No complex calibration
- Compensates for dirt on glass
- Improved accuracy over temperature and life
- Make better decisions
- Class 1 eye safe
- Longer battery life
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