Reset signal generators for a frequency-phase detector and...

Details Reset signal generators for a frequency-phase detector and... Reset signal generators for a frequency-phase detector and...

2007-10-16

2007-10-16

Lee, Benny (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C327S157000, C327S536000

Reexamination Certificate

active

11179953

ABSTRACT:
Reset signal generators for a frequency-phase detector include a first signal source circuit is coupled to a pump-up signal of the frequency-phase detector. The first signal source circuit includes a first load therein establishing a voltage level at a first node when a first current flows through the first load. The first signal source circuit is configured to activate the first current responsive to the pump-up signal. A second signal source circuit is coupled to a pump-down signal of the frequency-phase detector. The second signal source circuit includes a second load therein establishing a voltage level at a second node when a second current flows through the second load. The second signal source circuit is configured to activate the second current responsive to the pump-down signal. A logic circuit is configured to generate the reset signal responsive to the voltage levels at the first node and at the second node.

REFERENCES:
patent: 6140853 (2000-10-01), Lo
patent: 6430244 (2002-08-01), Ryu
patent: 6566923 (2003-05-01), Pettersen
patent: 10-190450 (1998-07-01), None
patent: 1020030003416 (2003-01-01), None

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