Differential feedback equalizer and method of implementing a differential feedback equalizer
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United States of America Patent
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Jan 23, 2018
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app pub date -
Jul 11, 2016
filing date -
Jul 11, 2016
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Abstract
A differential feedback equalizer is described. A differential feedback equalizer comprises a summer circuit configured to receive a differential input signal and a summer tap circuit output and to generate a summer circuit differential output; a first latch configured to receive the summer circuit differential output from the summer circuit and to generate a first differential latch output comprising a first state of the differential feedback equalizer; and a feedback circuit having a NAND gate coupled to an output of the first latch and configured to generate a differential tap feedback signal; wherein the feedback circuit comprises a NAND gate buffer that maintains the differential tap feedback signal at a predetermined voltage during a reset phase of the first latch. A method of implementing a differential feedback equalizer is also described.
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