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Method and apparatus for calibrating an RDAC for end-to-end tolerance correction of output resistance

  • US 7,688,240 B2
  • Filed: 05/02/2008
  • Issued: 03/30/2010
  • Est. Priority Date: 05/02/2008
  • Status: Active Grant
First Claim
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1. A method of calibrating a resistor digital-to-analog converter (RDAC), comprising:

  • receiving a digital signal comprising a digital code by an RDAC; and

    automatically deriving a calibrated digital code based on resistance versus digital code characteristic curves of an expected RDAC and the RDAC for end-to-end tolerance correction in output resistance of the RDAC to obtain an expected resistance.

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