產品資訊

TCS3771（Color sensor with Proximity Detection）

  • Overview：
  • The TCS3771 family of devices provides red, green, blue, and clear (RGBC) light sensing and proximity detection (when coupled with an external IR LED). They detect light intensity under a variety of lighting conditions and through a variety of attenuation materials. The proximity detection feature allows a large dynamic range of operation for use in short distance detection behind dark glass such as in a cell phone or for longer distance measurements for applications such as presence detection for monitors or laptops. The programmable proximity detection enables continuous measurements across the entire range. In addition, an internal state machine provides the ability to put the device a low power mode in between RGBC and proximity measurements providing very low average power consumption.

    The TCS3771 is directly useful in lighting conditions containing minimal IR content such as LED RGB backlight control, reflected LED color sampler, or fluorescent light color temperature detector. With the addition of an IR blocking filter, the device is an excellent ambient light sensor, color temperature monitor, and general purpose color sensor.

    Product Features:
    • RGB Color Sensing and Proximity Detection in a Single Device
    • Proximity Detection
      − Programmable Number of IR Pulses, Current Sink for the IR LED —    No Limiting Resistor Needed, and Interrupt Function with Upper and    Lower Thresholds
      − Covers a 2000:1 Dynamic Range
    • I2C Interface Compatible − Up to 400 kHz (I2C Fast Mode)
    • Dedicated Interrupt Pin
    • Small 2 mm x 2.4 mm Dual Flat No-Lead Package
    • Sleep Mode — 2.5 uA Typical Current
    • Color Light Sensing
      − Programmable Analog Gain, Integration Time, and Interrupt Function    with Upper and Lower Thresholds
      − Resolution Up to 16 Bits
      − Very High Sensitivity — Ideally Suited for Operation Behind Dark Glass
      − Up to 1,000,000:1 Dynamic Range
    • I2C Interface Compatible
      − Up to 400 kHz (I2C Fast Mode)
    • Pin and Register Set Compatible with the TCS3x7x Family of Devices

Downloads：

TCS3771