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ELECTRONIC DEVICE AND METHOD FOR BUFFERING

  • US 20120074987A1
  • Filed: 09/16/2011
  • Published: 03/29/2012
  • Est. Priority Date: 09/28/2010
  • Status: Active Grant
First Claim
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1. An electronic device comprising a buffer, the buffer having a first switch and a second switch coupled in series at a first output node, a third switch and a fourth switch coupled in series at a second output node, a first current source and a second current source, wherein the first current source is coupled with one side to the first switch and the third switch and with another side to a first supply voltage, the second current source is coupled with one side to the second switch and the fourth switch and with a second side to a second supply voltage, and the first current source is configured to adjust an output swing in a first operation mode and in a second operation mode, and the second current source is configured to adjust a common mode voltage level of the output signal in the first operation mode and to provide maximum series resistance in the second operation mode.

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