A phase detector customized for clock synthesis unit

Details A phase detector customized for clock synthesis unit A phase detector customized for clock synthesis unit

H - Electricity

03

L

H03L 7/089 (2006.01) H03D 13/00 (2006.01) H03L 7/18 (2006.01)

Patent

CA 2344787

A phase detector customized for Clock Synthesis Unit (CSU) is disclosed. The design improves jitter performance by providing minimal activity on VCO control lines and pushing ripple frequency to one octave higher, while maintaining wide linear characteristic. Moreover, it provides a frequency-scalable circuit that unlike a conventional phase-and-frequency detector (PFD), does not rely on asynchronous elements. A description of prior art and two embodiments of the innovation are provided.

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