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Method and apparatus for calibrating a multi-level current mode driver having a plurality of source calibration signals

  • US 7,093,145 B2
  • Filed: 07/30/2004
  • Issued: 08/15/2006
  • Est. Priority Date: 10/19/1999
  • Status: Expired due to Fees
First Claim
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1. A current controller, comprising:

  • a voltage generator that generates a reference voltage signal, wherein a potential of the reference voltage signal is selected from a plurality of reference voltage levels;

    a node to supply a selected source calibration signal, wherein the selected source calibration signal is selected from a plurality of source calibration signals;

    a comparator coupled with the voltage generator and the node, wherein the reference voltage signal and the selected source calibration signal are applied to the comparator; and

    a source calibration signal adjustment circuit to adjust the selected source calibration signal in accordance with an output signal of the comparator.

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