TCS3701 Color and Proximity Sensor

Light-to-Digital Converter with I²C interface


  • Ultra-high ALS and color sensitivity
  • 1024x dynamic range
  • 0.18µm process technology with 1.8V I²C
  • High proximity crosstalk compensation
  • Companion non-predictive asynchronous algorithm


  • Enables maximum design flexibility for operation behind Organic LED displays or dark inked glass
  • Enables dark room to sunlight operation
  • Reduces power consumption
  • When combined with a VCSEL emitter enables operation behind OLED
  • Enables ambient light measurement during display blanking periods

Product parameters

Supply Voltage [V] 1.7 - 2.0
I²C Bus 1.8V
Programmable Gain, Integration Time, Interrupt
Integrated Capabilities
Recommended Operating Distances <50 cm
Temperature Range [°C] -30 to 70
Packages FN, pin count 12

General Description

The TCS3701 is a very-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing in parallel with IR proximity detection. The Ambient light and color sensing function provides 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 proximity function synchronizes IR emission and detection to sense nearby objects. The IR driver needs to be connected to an external LED or VCSEL emitter. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, advanced optical crosstalk noise cancellation, 14-bit data output and interrupt-driven 1.8V I²C communications interface. Sensitivity, power consumption, and noise can be optimized with adjustable IR LED timing and power. The proximity engine recognizes detect/release events and produces a configurable interrupt whenever the proximity result crosses upper or lower threshold settings.

This product suits for the following applications:

  • Display backlight control
  • Display management
  • Ambient light sensing
  • Color temperature sensing to assist backlight, camera, and flash control


Title Category Headline Buy
Evaluation Kit for TCS3701 Application Board Evaluation Kit for TCS3701

Technical Documents

Type Description Language
Application Note Minimizing Crosstalk and Emitter Placement English
Product Brief Product overview TCS3701 English

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate_TCS3701 English

Other Information

Type Description Language
Block Diagram TCS3701 Block Diagram English


查看颜色和接近传感解决方案,这些解决方案可配置于纸质显示 OLED 后, 使显示屏达到与印制书一样的文字阅读效果。我们的小孔径光学传感器件基于精细的模拟前端和数字电路以及创新的封装设计技术,将本底噪声降低至最低可能值。

新产品 TCS3701 可在 OLED 显示屏下进行传感器操作,测量智能手机的前置环境光和接近传感,以此实现显示屏尺寸最大化。

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