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TMD37821 Color Sensor

Digital color sensor, proximity sensor and IR LED in an optical module with VDD I2C interface


  • Integrated RGB and proximity detection (including IR LED) in an optical module
  • Integrated UV and IR blocking filters
  • Calibrated 100mm proximity detection distance
  • Circular segmented RGBC photodiodes


  • Single device (module) reduces board space and design effort
  • Enables accurate color and ambient light and CCT sensing under varying lighting conditions
  • Eliminates end-product factory calibration
  • Enables uniform angular response

Product parameters

Supply Voltage [V] 2.6-3.6
Programmable Gain, integration time, interrupt, with IR filter and UV filter
Integrated Capabilities Color sensing, IR LED
Recommended Operating Distances < 15 cm, < 46 cm, < 1 m
Temperature Range [°C] -40 to 85
Packages Surface mount, 8 pin optical module

General Description

The TMD3782x device provides red, green, blue, and clear (RGBC) light sensing and proximity detection. The devices detect light intensity under a variety of lighting conditions and through a variety of attenuation materials, including dark glass. The proximity detection feature allows a large dynamic range of operations for accurate distance detection, such as in a cell phone, for detecting when the user positions the phone close to their ear. IR LED sink current is factory trimmed to provide consistent proximity response without requiring customer calibrations. An internal state machine provides the ability to put the device into a low power state in between proximity and RGBC measurements providing very low average power consumption. This data is transferred via an I2C to the host.

This product suits for the following applications:

  • Mobile phone touchscreen control
  • Ambient light sensing
  • Light color temperature sensing
  • Medical diagnostics
  • Optical switch


Title Category Headline Buy
TMD3782EvalKit Application Board Evaluation Kit for TMD3782


Name Type Description Language Application Data RefBoard English

Technical Documents

Name Type Description Version Language
TMD3782_BD000179_1-00.png Block Diagram TMD3782 Block Diagram 1-00 English
TMD3782_DS000356_3-00.pdf Datasheet Document version 3-02 3-00 English
TMD3782_FS000132_2-00.pdf Factsheet Color Sensor and Proximity Detection 2-00 English
TMD3782_PD000431_1-00.pdf Other Product Document EOL Notification TMD3782 (issued 2018-Mar) 1-00 English
TMD37821_TMD37823_PD000362_1-00.png Other Product Document TMD3782EvalKit Image 1-00 English

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