High-speed and high-precision phase locked loop

Details High-speed and high-precision phase locked loop High-speed and high-precision phase locked loop

2005-08-16

2005-08-16

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

C331S00100A, C331S017000

Reexamination Certificate

active

06930560

ABSTRACT:
A phase lock loop includes a charge pump, a voltage controlled oscillator (VCO), and a phase frequency detector. The phase frequency detector has a dynamic logic structure. The phase frequency detector generates up and down signals for directing the charge pump to provide a voltage signal to the VCO to vary the frequency of the VCO clock. The difference between the up and down signals is indicative of the phase difference between the reference clock signal and the VCO clock. The phase frequency detector includes up and down signal generators for generating the up and down signals, respectively.

REFERENCES:
patent: 5436596 (1995-07-01), Folmer
patent: 5592109 (1997-01-01), Notani et al.
patent: 5815041 (1998-09-01), Lee et al.
patent: 6462624 (2002-10-01), Lee et al.
patent: 0 711 041 (1996-05-01), None
patent: 1-248821 (1989-10-01), None
patent: 5-323897 (1993-12-01), None

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