ams TCS3408 Color Sensor



The TCS3408 is an ultra-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing and selective flicker detection. The ambient light and color sensing function provide five concurrent ambient light sensing channels: Red, Green, Blue, Clear, and Wideband. The RGB and Clear channels have a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, data output and interrupt-driven 1.8V I²C communications interface. The device integrates direct detection of 50Hz or 60Hz ambient light flicker. Flicker detection is executed in parallel with ambient light and color sensing has independent gain configuration and also suppresses cross-coupling from any 940nm IR, if generated by adjacent circuits (e.g. from a Time-of-Flight sensor). The flicker detection engine can also buffer data for calculating other flicker frequencies externally.



  • Ultra-high ALS and color sensitivity
  • 4096x dynamic range
  • Dual 50/60 Hz ambient light flicker detection channel
  • Improved RGBC and doubling of flicker gain (2048x)
  • Improved UV/IR-rejection filter
  • 0.18µm process technology with 1.8V I²C


  • Enables accurate stable measurement behind inked materials
  • Enables dark room to sunlight operation
  • Minimizes camera flicker effect in 50/60 Hz light-source environments
  • 3x flicker sensitivity enables detection of low and high frequency light flickering
  • Improves lux accuracy and CCT measurements
  • Reduces power consumption in battery powered applications

Ordering codes

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Application note

Environmental documents