Phase comparator for extending capture range

Details Phase comparator for extending capture range Phase comparator for extending capture range

1987-09-03

1989-04-04

Laroche, Eugene R.

Oscillators

Relaxation oscillators

328133, 328155, 331 1A, 375119, H03D 302

Patent

active

048190810

ABSTRACT:
An extended range logic circuit is activated to decrease the settling time and prevent slip, when phase difference of two signals being compared by a phase comparator reaches a slip point. The circuit provides error correction signals to compensate for the phase correction at a much faster rate when the phase error reaches a predetermined point, which is proximate to the slip point. However, the extended capture range circuit in only active during the lock acquisition. After lock is achieved the extended capture range logic is disabled, to provide better jitter performance.

REFERENCES:
patent: 3528026 (1970-09-01), Groendycke
patent: 3579281 (1971-05-01), Kam et al.
patent: 3676794 (1972-07-01), Bidell et al.
patent: 4151485 (1979-04-01), LaFratta
patent: 4434407 (1984-02-01), Healey, III et al.
patent: 4516250 (1985-05-01), Grimes
patent: 4528523 (1985-07-01), Crowley
patent: 4694259 (1987-09-01), Carickhoff et al.
patent: 4733197 (1988-03-01), Chow

Affiliated with

Also associated with

Rating

Phase comparator for extending capture range does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase comparator for extending capture range, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase comparator for extending capture range will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-184074