ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

TMD37821 Color Sensor

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


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 operation 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.

Key Features

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

Key Benefits

  • 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 Facts

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