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TCS37717 Color Sensor

Color light-to-digital converter with proximity sensing, I²C = 1.8V


  • Integrated RGB and proximity detection
  • Programmable color sensing and proximity detection
  • 1M:1 dynamic range
  • Programmable interrupt function
  • Area efficient 2mm x 2.4mm Dual Flat no-lead (FN) package


  • Single device (module) reduces board space and design effort
  • Enables flexible operation for wide range of applications
  • Enables operation within wide range of lighting conditions
  • Reduces microprocessor interrupt overhead
  • Reduces board space requirements while simplifying designs

Product parameters

Supply Voltage [V] 2.7 - 3.3
I²C Bus 1.8V
Programmable Gain, integration time, interrupt
Integrated Capabilities ALS, color sensing
Recommended Operating Distances < 1 m
Temperature Range [°C] -40 to 85
Package FN, pin count 6
Remark Not recommended for new designs. Please see TCS3772x device family.

General description

The TCS3771 family of devices provides red, green, blue, and clear (RGBC) light sensing and proximity detection (when coupled with an external IR LED). They detect light intensity under a variety of lighting conditions and through a variety of attenuation materials. The proximity detection feature allows a large dynamic range of operation for use in short distance detection behind dark glass such as in a cell phone or for longer distance measurements for applications such as presence detection for monitors or laptops. The programmable proximity detection enables continuous measurements across the entire range. In addition, an internal state machine provides the ability to put the device into a low power mode in between RGBC and proximity measurements providing very low average power consumption. This data is transferred via an I2C to the host.

Not Recommended for New Designs!

ams-OSRAM AG is discontinuing production of this device. Final lifetime buy order must be placed by OCTOBER 15, 2021. Please contact your local sales representative for further information regarding available or planned replacement options.

This product suits for the following applications:

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


Title Category Headline Buy
TCS3771EvalKit Application Board Evaluation Kit for TCS3771


Type Description Language
Application Data RefBoard English

Technical documents

Type Description Language
Datasheet Document version 1-31 English
Application Note Minimizing Crosstalk and Emitter Placement English
Application Note Lux and CCT Calculations (DN 40) English
Application Note Compensating for Light Flicker on Optical Sensors (DN 22) English
Application Note Improving Color Sensor Lux Accuracy English
Application Note Colorimetry Tutorial (DN 20) English
Application Note Basic Pre-Production Light & Color Sensor Solution Validation Process English


Type Description Language
EoL Notification Plano Test Site (issued May-20-2021) English

Other information

Type Description Language
Block Diagram TCS3771 Block Diagram English
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