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TOUCH CONTROLLER WITH IMPROVED ANALOG FRONT END

  • US 20110063154A1
  • Filed: 09/11/2009
  • Published: 03/17/2011
  • Est. Priority Date: 09/11/2009
  • Status: Active Grant
First Claim
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1. An analog front end for receiving a sense signal from a touch sensor, comprising:

  • a transimpedance amplifier;

    a feedback resistor coupled to an input of the transimpedance amplifier and to an output of the transimpedance amplifier; and

    a bandpass filter coupled to the output of the transimpedance amplifier.

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