Digital color sensors with on-chip IR filtering and proximity sensing
The TCS3x72 Series’ IR blocking filter is integrated directly on-chip and localized only to the color sensor photodiodes. High accuracy color sensing requires eliminating errors due to the IR spectral component in light sources. The on-chip IR blocking filter minimizes these effects and eliminates requirements for external IR filtering. In addition, the on-chip IR blocking filter enables the devices to perform ambient light sensing to enable automatic backlight brightness control based on ambient lighting conditions. The TCS3x71 Series applications include closed-loop color temperature feedback control in solid-state lighting (SSL) and LED RGB backlit displays.
The combined color and proximity sensing in the TCS3771 and TCS3772 family of devices has applications in OLED-based smartphones for determining the color temperature of the ambient light to provide the optimum display picture quality and to provide touchscreen control. These devices can also be used to create smarter products, such as household appliances, which sense color and user presence. The TCS3x71 and TCS3x72 Series is pin and register compatible enabling simple design options and minimizing software development. TAOS provides software which optimizes the TCS3x72 Series ALS accuracy and enables light color temperature sensing. In addition, to accelerate time-to-market and reduce design-in effort, TAOS provides evaluation modules (EVMs) and software driver support.
Visit TAOS at www.taosinc.com
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