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TCS37727 Color Sensor

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


  • Integrated RGB and proximity sensor
  • Programmable color sensing and proximity detection
  • Integrated IR blocking filter
  • 3.8M:1 dynamic range


  • Single device reduces board space
  • Enables flexible operation for wide range of applications
  • Enables accurate color and ambient light sensing under varying lighting conditions
  • Enables operation within wide range of lighting conditions

Product parameters

Supply Voltage [V] 2.7 - 3.6
I²C Bus 1.8V
Programmable Gain, Integration time, Interrupt
Integrated Capabilities ALS, color sensing
Recommended Operating Distances < 15 cm, < 46 cm, < 1 m
Temperature Range [°C] -30 to 70
Packages FN, pin count 6

General Description

The TCS3772 device family provides red, green, blue, and clear (RGBC) light sensing and, when coupled with an external IR LED, proximity detection. These 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 operation for accurate short distance detection, such as in a cell phone, for detecting when the user positions the phone close to their ear. 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 handsets
  • Tablets
  • Computers
  • Optical switch
  • Industrial process control


Name Type Description Language 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
TCS3772_BD000175_1-00.png Block Diagram TCS3772 Block Diagram 1-00 English
TCS3772_DS000175_3-00.pdf Datasheet Document version 1-01 3-00 English
TCS3772_FS000111_1-00.pdf Factsheet Color Sensors and Proximity Detection 1-00 English

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