High frequency voltage controlled oscillator

Details High frequency voltage controlled oscillator High frequency voltage controlled oscillator

1992-11-19

1994-01-11

Pascal, Robert J.

Oscillators

Ring oscillators

331 1A, 331 34, 331108A, 331116FE, 307594, 307595, 307597, 307602, 307603, 307605, 307606, H03B 2700

Patent

active

052785220

ABSTRACT:
A phase lock loop operates independent of temperature and process variation by digitally loading a VCO until reaching the desired operating frequency. The VCO reaches a high output frequency even under worst case processing by controlling multiple current mirrors to increase inverter switching current without slowing the response of the VCO to changes in loop node voltage. An Initialize-to-VDD circuit sets the loop node voltage to V.sub.DD so that the load control circuit need only increase loading to slow down the VCO to the desired operating frequency. A frequency range detector monitors the output frequency of the VCO and passes control signals to a load control circuit to activate digital loads and slow down the VCO to the desired operating frequency.

REFERENCES:
patent: 3931588 (1976-01-01), Gehweiler
patent: 4091335 (1978-05-01), Giolma et al.
patent: 4388536 (1983-06-01), Peil et al.
patent: 5061907 (1991-10-01), Rasmussen
patent: 5081428 (1992-01-01), Atriss et al.
patent: 5081429 (1992-01-01), Atriss et al.
patent: 5208888 (1991-07-01), Ray

Affiliated with

Also associated with

Rating

High frequency voltage controlled oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High frequency voltage controlled oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency voltage controlled oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1633897