Color sensor circuit with integrated programmable gain selection

Color sensor circuit with integrated programmable gain selection

  • CN 1,690,674 A
  • Filed: 12/28/2004
  • Published: 11/02/2005
  • Est. Priority Date: 04/21/2004
  • Status: Active Application
First Claim
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1. , a kind of color sensor that is structured on the single integrated circuit chip, described color sensor comprises:

  • A plurality of color sensing circuits, each the color sensing circuit in described a plurality of color sensing circuits comprises;

    One photodetector,One is connected to the amplifier of described photodetector, and described amplifier amplifies the signal from described photodetector, andOne is connected to described Amplifier Gain selects circuit, and described gain selection circuit is controlled described Amplifier Gain, and described gain selection circuit comprises a variable resistor;

    And,Control is selected in one gain, and it is that each color sensing circuit is selected other variable feedback resistance value.

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