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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
Packages 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.

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


Name Type Description Language
TCS3771_AD000115_3-00.pdf Application Data RefBoard English

Technical Documents

Name Type Description Version Language
ColorProxDetect_ColorProxDetectMod_AN000520_1-00.pdf Application Note Lux and CCT Calculations (DN 40) 1-00 English
LightSensors_AN000519_1-00.pdf Application Note Colorimetry Tutorial (DN 20) 1-00 English
ColorProxDetect_ColorProxDetectMod_AN000533_1-00.pdf Application Note Compensating for Light Flicker on Optical Sensors (DN 22) 1-00 English
ColorProxDetect_ColorProxDetectMod_AN000260_1-00.pdf Application Note Improving Color Sensor Lux Accuracy 1-00 English
TCS3771_BD000174_1-00.png Block Diagram TCS3771 Block Diagram 1-00 English
TCS3771_DS000341_2-00.pdf Datasheet Document version 1-31 2-00 English
TCS37717_PD000361_1-00.png Other Product Document TCS3771EvalKit Image 1-00 English

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