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TMF8701 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

特徴

  • Direct ToF technology with high sensitivity SPAD detection
  • Fast Time-to-Digital Converter (TDC) architecture
  • Sub-nanosecond light pulse
  • 0 – 10cm proximity detection and 10 – 60cm distance sensing @ 60Hz
  • On-chip histogram processing
  • 940nm VCSEL Class 1 Eye Safety with 21° FOI
  • Sunlight on-chip rejection filter and algorithm
  • Industry’s smallest modular OLGA 2.2mm x 3.6mm x 1.0 mm package

利点

  • 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 cm detect/release proximity events
  • 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

製品パラメーター

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] 60
Temperature Range [°C] -30 to 70
Package OLGA, Pin Count 12

概要

The TMF8701 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 operates in either a proximity mode (0 – 10 cm) or a ranging mode (10 – 60 cm) for detection sensing. The device utilizes highly sensitive SPAD detection with fast compact time-to digital converters to make high accurate distance measurement within ±5% and is capable of operation in dark environments.

A built-in histogram is featured to detect cover glass and objects behind glass to select object with highest SNR while compensating for dirt and smudges on cover glass to produce artifact free measurement of multiple objects. The histogram enables greater distance between cover glass, delivers dynamic cover glass calibration and crosstalk compensation. Class 1 eye safety is also featured through the narrow sub-nanosecond (<500 ps) fast pulse 940 nm VCSEL driver. Background light noise is minimized through on-chip superior sunlight rejection filter. 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.


The TMF8701 wins the Innovative Product of the Year Award at Sensors Expo 2019

本製品は以下の用途に適しています。

  • 3D facial recognition
  • Proximity detection
  • Presence detection
  • Object detection
  • Distance measurement
  • Collision avoidance

ツール

タイトル カテゴリー 見出し 購入
TMF8701 Evaluation Kit Application Board Evaluation Kit for TMF8701

リソース

タイプ 品目 言語
Application Data Schematic and Layout English
Application Data TMF8x0x Linux EVM Board Schematic and Layout English
Evaluation Software TMF8X0X_EvalSW_v2-2-18.exe EN
Firmware TMF8701_FW_v2.0.34.0.zip EN
Driver TMF8701_Driver_pLinux_v2.26.zip EN
Driver TMF8701_Driver_BareMetalMCU_v2.0.33.0.zip EN

技術資料

タイプ 品目 言語
Datasheet TMF8701 datasheet v2-00 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 TMF8701 product overview English

環境関連文書

タイプ 品目 言語
RoHS Certificate RoHS Certificate TMF8701 English

お知らせ

タイプ 品目 言語
Product Change Notification PCN03-2020 (TMF8701/TMF8801 - 1x reflow step at ams' Assembly House) English
Product Change Notification PCN49-2020 (issued 2020-Nov) English

その他の情報

タイプ 品目 言語
Block Diagram TMF8701 Block Diagram English
Image TMF8701 Device Pictures English
アセットパブリッシャー
TMF8701 - Time of flight