Linear low noise phase-frequency detector

Details Linear low noise phase-frequency detector Linear low noise phase-frequency detector

1998-10-05

1999-12-14

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 7, 327148, H03D 1300

Patent

active

060022736

ABSTRACT:
A phase-frequency detector (110) includes an output stage (300) and a control stage (200). The output stage includes a pump up switched current source (350), a pump down switched current sink (360), and a constant current source (325) that are coupled to a charge pump output node (111). The control stage generates, in response to a divided variable frequency signal (FV) (136) and a reference frequency signal (FR) (106), a pump up control signal (246) and a pump down control signal (216).

REFERENCES:
patent: 4970475 (1990-11-01), Gillig
patent: 5036216 (1991-07-01), Hihmann et al.
patent: 5052022 (1991-09-01), Nishita
patent: 5208546 (1993-05-01), Nagaraj
patent: 5233314 (1993-08-01), McDermott et al.
patent: 5432481 (1995-07-01), Saito
patent: 5699387 (1997-12-01), Seto et al.
patent: 5731723 (1998-03-01), Chen

Affiliated with

Also associated with

Rating

Linear low noise phase-frequency detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear low noise phase-frequency detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear low noise phase-frequency detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-866866