Phase-locked loop circuit with a multi-cycle phase detector and

Details Phase-locked loop circuit with a multi-cycle phase detector and Phase-locked loop circuit with a multi-cycle phase detector and

1993-10-08

2000-06-20

Urban, Edward F.

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 1A, 331 10, 331 11, 455260, H03D 324

Patent

active

060786345

ABSTRACT:
A phase-locked loop circuit for locking the phase of an oscillator to the phase of a reference signal includes a multi-cycle phase detector (11) for detecting a phase difference between an input signal and said reference signal through multiple clock cycles and for sending a corresponding phase adjustment signal, and, a multiple current source charge pump (12) connecting to said phase detector for receiving said phase adjustment signal and sending a current signal depending upon said phase adjustment signal.

REFERENCES:
patent: 5239561 (1993-08-01), Wong et al.
patent: 5271040 (1993-12-01), Clark
patent: 5278702 (1994-01-01), Wilson et al.
patent: 5278874 (1994-01-01), Liu et al.
patent: 5285483 (1994-02-01), Ogawa et al.
patent: 5313499 (1994-05-01), Coburn
patent: 5334951 (1994-08-01), Hogeboom

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