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TMF8801 1D Time-of-Flight Sensor

Time-of-Flight sensor with 940nm integrated IR VCSEL in a 2.2mm x 3.6mm x 1.0mm optical module 1.8V I²C


  • Direct ToF technology with high sensitivity SPAD detection
  • Fast Time-to-Digital Converter (TDC) architecture
  • Sub-nanosecond light pulse
  • 20 – 2500mm distance sensing @ 30Hz
  • On-chip histogram processing
  • 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


  • 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
  • Enables accurate distance measurements
  • Provides high accuracy, greater distance between cover glass, dynamic cover glass calibration, dirt or smudge removal and crosstalk compensation
  • Eye-safety circuitry stops VCSEL driver if VCSEL fault occurs
  • Optical filters with algorithm support enables high ambient light resilience
  • Reduce board space requirements, enables low-profile system designs in restricted space Industrial Designs

Product parameters

Supply Voltage [V] 2.7 - 3.3
I²C Bus 1.8V
Programmable Mode setting, Repetition rate, Interrupt
Integrated Capabilities and Components Ambient light immunity (100k lux to 0 lux)
Recommended Operating Distances [cm] 2 - 250
Temperature Range [°C] -30 to 70
Package OLGA, Pin Count 12

General description

The TMF8801 is a true direct time-of-flight (ToF) sensor system in a single modular package which offers highly accurate depth accuracy detection through a sub-nanosecond light pulse and an antialiasing “stop-watch” method to measure round-trip time of pulse. It provides single zone detection of an object irrespective of the color, reflectivity and texture of the object. The single module with VCSEL emitter offers high dynamic range and detection sensing measurements from 2 – 250 cm distances. The device utilizes highly sensitive SPAD detection with fast compact time-to digital converters to make highly accurate distance measurements within ±5% and is capable of operation in dark environments and in the presence of sunlight. A built-in histogram is featured to detect cover glass and reports an object distances operating with the highest SNR while compensating for dirt and smudges contaminants on a products cover glass to produce artifact free measurement. The histogram delivers dynamic cover glass calibration and crosstalk compensation and background light noise is minimized through on-chip sunlight rejection filters. Data output is through a 1.8V I²C fast-mode communications interface and an integrated micro controller is featured with all algorithms included on-chip with no need for external optics.

This product suits for the following applications:

  • Laser Detect Auto-Focus (LDAF)
  • Presence detection
  • Industrial ranging
  • People counting
  • Object and collision avoidance
  • Fast ranging navigation detection
  • Inventory control
  • Optical switch
  • Low-power system buffering of 3D cameras


Title Category Headline Buy
TMF8801 Evaluation Kit Application Board Evaluation Kit for TMF8801


Type Description Language
Application Data TMF8801 daughter card schematic and layout English
Application Data TMF8x0x Linux EVM Board Schematic and Layout English
Firmware EN
Evaluation Software TMF8X0X_EvalSW_v2-2-20.exe EN
Firmware Firmware EN
Driver EN
Driver EN
Driver EN
Demo TMF8801_Demo_LaptopDemo_v5-9-3.exe EN

Technical documents

Type Description Language
Datasheet TMF8801 Time-of-Flight Sensor English
Application Note TMF8X0X Optical Design Guide English
Application Note TMF8X0X Linux Device Driver ABI English
Application Note I2C Commands to Control TMF8701/TMF8801/TMF8805 English
Application Note ams Optical Sensors Design Recommendations for System EMI and ESD English
Product Brief Brief overview TMF8801 English
Technical Note TMF8701, TMF8801, TMF8805 Laser Certificate English
Other Product Document Hermes eLock Overview English

Environmental documents

Type Description Language
RoHS Certificate RoHS Certificate TMF8801 English


Type Description Language
Product Change Notification PCN03-2020 (TMF8701/TMF8801 - 1x reflow step at ams' Assembly House) English
Product Change Notification PCN49-2020 (issued 2020-Nov) English

Other information

Type Description Language
Block Diagram TMF8801 Block Diagram English
Factsheet 1D Time-of-Flight Sensing (Factsheet for TMF8801) English
Image TMF8801 Device Pictures English
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