Phase detector and associated phase detecting method
A phase detector includes a plurality of sampling circuits, a logic circuit, a plurality of demultiplexers and a decision circuit, wherein the plurality of sampling circuits use a plurality of clock signals with different phases to sample a data signal respectively to generate a plurality of sampling results; the logic circuit generate N phase-leading signals and N phase-lagging signals according the plurality of sampling results; the plurality of demultiplexers perform demultiplex operations to the N phase-leading signals and the N phase-lagging signals respectively to generate M phase-leading output signals and M phase-lagging output signals respectively; and the decision circuit generates a final phase-leading signal and a final phase-lagging signal according the M phase-leading output signals and the M phase-lagging output signals.
M31 Technology Corporation
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Cheng-Liang Chao-Hsin Chih-Hsien Chun-Cheng
Hung Fan Jiang Chang Lin