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SYSTEMS AND METHODS FOR COMMON MODE LEVEL SHIFTING

  • US 20150280695A1
  • Filed: 03/27/2014
  • Published: 10/01/2015
  • Est. Priority Date: 03/27/2014
  • Status: Active Grant
First Claim
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1. A common mode voltage level shifting circuit, comprising:

  • input nodes configured to receive a differential signal with a first common mode voltage;

    a pair of shunt capacitors coupled between the input nodes and a corresponding pair of output nodes;

    a threshold voltage circuit, including the output nodes, coupled to the differential signal though the shunt capacitors, the threshold voltage circuit configured to provide a second common mode voltage for the differential signal at the output nodes; and

    current sources that are controlled according to a level of the first common mode voltage, the current sources coupled to the output nodes to effect the second common mode voltage.

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