PLL circuit with improved stability

Details PLL circuit with improved stability PLL circuit with improved stability

1994-02-25

1997-06-03

Pascal, Robert

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 25, 331DIG2, 327156, 327160, 375376, 375374, H03L 706

Patent

active

056358750

ABSTRACT:
A PLL circuit detects a phase difference between a signal relating to an output of a voltage control oscillator and a reference signal, and discrimination between a phase lead and a phase lag, increments or decrements a preset value by the number of pulses corresponding to the detected phase difference in accordance with the detected discrimination between the phase lead and the phase lag, converts the count value into a corresponding voltage, and feedbacks the voltage to the voltage control oscillator. When the reference signal is stopped, the count operation is halted. A plurality of values including an initial value for the value required in the count operation are previously stored, and a desired value is selected from these values.

REFERENCES:
patent: 3882412 (1975-05-01), Apple, Jr.
patent: 4380742 (1983-04-01), Hart
patent: 4531102 (1985-07-01), Whitlock et al.
patent: 4695931 (1987-09-01), Yamaura et al.
patent: 4931748 (1990-06-01), McDermott et al.
patent: 5028885 (1991-07-01), Voigt et al.

Affiliated with

Also associated with

Rating

PLL circuit with improved stability does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PLL circuit with improved stability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PLL circuit with improved stability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-394151