Latched charge pump for phase locked loop

Details Latched charge pump for phase locked loop Latched charge pump for phase locked loop

1999-02-01

2000-11-28

Kinkead, Arnold

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

331 1A, 327536, 327537, H03L 700, H03L 706

Patent

active

06154096&

ABSTRACT:
A charge pump of a phase comparator in a phase locked loop is provided a latched comparator to minimize the effect of "dead band" during the time between charging and discharging the loop filter of the charge pump. A latch is inserted between the charging or discharging amplifier and a reset switch which turns on either the charging amplifier or the discharging amplifier. The latch speed up the change over of the charging and discharging action due to regenerative action. The latch can be an asymmetrical flip flop with one inverter fed from a reference current source and a second inverter fed from an on/off current source as controlled by the sourcing command from the phase comparator.

REFERENCES:
patent: 5986487 (1999-11-01), Ridgers

Affiliated with

Also associated with

Rating

Latched charge pump for phase locked loop does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Latched charge pump for phase locked loop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latched charge pump for phase locked loop will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1729839