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Serdes voltage-mode driver with skew correction

  • US 9,264,263 B2
  • Filed: 04/21/2014
  • Issued: 02/16/2016
  • Est. Priority Date: 04/21/2014
  • Status: Active Grant
First Claim
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1. A driver circuit for driving data values on a differential output including a positive output node and a negative output node, the driver circuit comprising:

  • a voltage-mode driver module configured to drive voltages on the positive output node and the negative output node based on values on a data input of the voltage-mode driver module; and

    a first current-mode driver module including;

    a head current source operable to source a first current;

    a tail current source operable to sink a second current; and

    switches configured to selectively couple the head current source to the negative output node and the tail current source to the positive output node or couple the head current source to the positive output node and the tail current source to the negative output node based on values on a data input of the first current-mode driver module,wherein the magnitudes of the first current and the second current are independently selectable.

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