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TMF8821 configurable 4x4 multi-zone Time-of-Flight Sensor

Multi-zone Time-of-Flight sensor with 940nm integrated IR VCSEL in a 2.0mm x 4.6mm x 1.4mm module


  • Direct ToF technology with high sensitivity SPAD detection
  • 4x4 configurable multi-zone configuration with multi-object detection
  • Adjustable field of view (up to 63° diagonal)
  • Fast Time-to-Digital Converter (TDC) architecture
  • Sub-nanosecond light pulse
  • 10 – 5000mm distance sensing @ 30Hz
  • On-chip histogram processing
  • 940nm VCSEL Class 1 Eye Safety
  • High performance on-chip sunlight rejection filter and algorithm
  • Small modular OLGA 2.0mm x 4.6mm x 1.4mm package


  • Delivers high SNR, wide dynamic range and no multi-path reflections
  • Enables dark and sunlight environment distance measurement within ±5%
  • Adaptable FoV for custom scene matching
  • 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
  • Reduced board space requirements, enables low-profile system designs in restricted space Industrial designs

Product parameters

Supply Voltage [V] 2.7 - 3.3
I²C Bus [V] 1.8
Programmable Mode setting, Repetition rate, Interrupt
Integrated Capabilities and Components
Recommended Operating Distances [cm] 1-500
Temperature Range [°C] -30 to 70
Package OLGA pin count 12

General description

The TMF8821 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. Due to its lens on the SPAD, it supports 3x3, 4x4 and 3x6 multizone output data and a wide, dynamically adjustable, field of view. A multi-lens-array (MLA) inside the package above the VCSEL widens up the FoI (field of illumination). All processing of the raw data is performed on-chip and the TMF8821 provides distance information together with confidence values on its I2C interface.

This product suits for the following applications:

  • Laser Detect Auto-Focus (LDAF)
  • User presence detection
  • Industrial ranging
  • Level sensing
  • People counting
  • Object and collision avoidance
  • Inventory management
  • Proximity detection


Title Category Headline Buy
TMF8821 Eval Kit Application Board Evaluation Kit for TMF8820 & TMF8821
TMF882X Eval Kit Application Board Evaluation Kit for TMF8820, TMF8821 & TMF8828
TMF8821 Mcu Shield Evm Application Board Arduino Uno Shield format Evaluation Kit for TMF8821
TMF882x Mcu Shield Evm Application Board Arduino Uno Shield Evaluation Kit for for TMF8820, TMF8821 & TMF8828


Type Description Language
Application Data TMF882x Shield Board Schematic & Layout English
Firmware EN
Driver EN
Driver EN
Driver Python reference driver using a FTDI device as USB<->I2C interface with integrated de-scattering filter EN
Driver Linux driver and firmware hexfiles for all drivers. EN
Driver EN
Driver Arduino driver written from scratch. TMF8820/21 driver is intended to be easy to use and understand. Simplifies porting to other non-Linux platforms. EN
Evaluation Software TMF882X_EvalSW_v4-7-3.exe EVM evaluation software GUI EN
Evaluation Software TMF882X_EvalSW_Arduino_Demo_GUI_v1-0-3.exe GUI for Arduino driver for TMF8820 and TMF8821 EN

Technical documents

Type Description Language
Datasheet TMF882x Datasheet English
Application Note Host Driver Communication English
Application Note ams Optical Sensors Design Recommendations for System EMI and ESD English
Application Note TMF882x Shield Board Crosstalk English
Quick Start Guide TMF882X_SHIELD Quick Start Guide English
Technical Note Eye Safety Certificate English
User Guide TMF882X EVM User Guide English
Other Product Document TMF882X EVM Gorilla Glass Datasheet PI-Sheet-RevE English
Other Product Document TMF882X_EVM_SDK_CG (.pdf ) English
Other Product Document Logfile Format Description English
Other Product Document TMF882X optical design guide English
Other Product Document TMF882x optical design guide Rubber Boot EVM English
Other Product Document TMF8821 Software Development Kit Overview English
Other Product Document TMF882X-EVM kit rubber boot design STEP file English
Other Product Document TMF8821 / TMF8828 FoI FoV STEP file English

Environmental documents

Type Description Language
RoHS Certificate RoHS Certificate TMF8820, TMF8821,TMF8828 English

Other information

Type Description Language
Block Diagram TMF882X Block Diagram English
Factsheet TMF8820/21/28 Multi-zone Time-of-Flight Sensors English
Image TMF882x bottom view perspective
Image TMF882x top view perspective
Image TMF882x bottom view
Image TMF882x top view
Image TMF8821 EVM Image
Image TMF8821 Shield Image
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