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CAPACITIVE TOUCH SENSE ARCHITECTURE

  • US 20130162586A1
  • Filed: 02/23/2012
  • Published: 06/27/2013
  • Est. Priority Date: 02/25/2011
  • Status: Active Grant
First Claim
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1. A capacitance measurement circuit comprising:

  • a. an external capacitor; and

    b. a coherent detection circuit coupled to the external capacitor and configured to measure a capacitance of the external capacitor and to convert the measured capacitance to a corresponding voltage output.

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