High speed DFEs with direct feedback

user-6144298de55422cecdaf68a5(2017)

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摘要
A method and system of equalizing in a decision feedback equalizer is provided. A plurality of adder circuits receives a digital code representing a previously decided symbol from an output of a prior path of a plurality of paths. A decision-making slicer circuit receives an input voltage and a first clock signal. The plurality of adder circuits receives a second clock signal and injects an offset current proportional to the digital code representing the previously decided symbol into a current injection input of the decision-making slicer circuit, at a first edge of the second clock signal. There is a predetermined skew between the first clock and the second clock to control a timing between the injection of the offset current of the plurality of adder circuits and the initiation of a decision-making phase of the decision-making slicer circuit.
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关键词
Clock signal,Adder,Electronic circuit,Offset (computer science),Skew,Voltage,Electrical engineering,Computer science,Direct feedback,Equalizer
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