Integrated differential voltage controlled ring oscillator

Details Integrated differential voltage controlled ring oscillator Integrated differential voltage controlled ring oscillator

1992-05-12

1993-03-02

Grimm, Siegfried H.

Oscillators

Ring oscillators

331 75, 331108B, 331177R, H03B 502

Patent

active

051913011

ABSTRACT:
A highly stable, high frequency voltage controlled oscillator (VCO) for phase locked loops is adapted to be fully integrated on a single silicon chip and is operable over a wide frequency range without using off-chip capacitors. The VCO is a fully differential ring oscillator with fully differential voltage control. The VCO is constructed from basic blocks made of differential emitter coupled transistor pairs. Voltage control is provided by differential d.c. amplifiers which vary the capacitive load seen by the logic blocks.

REFERENCES:
patent: 4519086 (1985-05-01), Hull et al.
patent: 4565976 (1986-01-01), Campbell
patent: 4641048 (1987-02-01), Pollock
patent: 4694261 (1987-09-01), Ewen et al.
patent: 4695808 (1987-09-01), Cabaniss et al.
patent: 4797586 (1989-01-01), Traa
patent: 4833425 (1989-05-01), Culican, Sr. et al.
patent: 4833695 (1989-05-01), Greub
patent: 4862020 (1989-08-01), Cowan et al.
patent: 4876519 (1989-10-01), Davis et al.
patent: 4879530 (1989-11-01), Wilhelm et al.
patent: 4884041 (1989-11-01), Walker
patent: 4978927 (1990-12-01), Hausman et al.
patent: 4994763 (1991-02-01), Chen et al.
patent: 5012142 (1991-04-01), Sonntag
IBM Technical Disclosure Bulletin, "High-Frequency Voltage-Controlled Oscillator", vol. 33 No. 5 Oct. 1990, pp. 260-262.
IBM Technical Disclosure Bulletin, "Improved Clamp for Differential VCO and Single-Shot", vol. 30 No. 8, Jan. 1988 pp. 237-238.

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