Phase detector customized for clock synthesis unit

Details Phase detector customized for clock synthesis unit Phase detector customized for clock synthesis unit

2006-08-08

2006-08-08

Ghayour, Mohammed (Department: 2631)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S316000, C375S327000, C375S362000, C331S011000, C331S016000, C331S017000, C331S018000, C331S025000, C327S012000, C327S017000, C327S148000, C327S150000, C327S157000, C327S159000

Reexamination Certificate

active

07088796

ABSTRACT:
A phase detector customized for Clock Synthesis Unit (CSU) is disclosed. The phase detector 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.

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Charles R. Hogge, Jr., “A Self-Correcting Clock Recovery Circuit”, Journal of Lightwave Technology, vol. LT-3, No. 6, 1312-1314, Dec. 1985.

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