Controllable multi-phase ring oscillators with variable current

Details Controllable multi-phase ring oscillators with variable current Controllable multi-phase ring oscillators with variable current

1992-10-13

1994-04-12

Grimm, Siegfried H.

Oscillators

Polyphase output

331 48, 331 49, 331 57, 331108A, 331108B, 331177R, 331179, 307602, 307603, 307605, H03B 524, H03K 3354

Patent

active

053029208

ABSTRACT:
An electrically controlled oscillator circuit having multi-phase outputs with programmable frequency. The circuit includes a ring oscillator having a plurality of inverting stages. Each stage has an output which is connected to a switch that can be programmed to select one of a plurality of capacitors with different values to change the frequency range of the oscillator. Controlled current is fed to the stages to vary the frequency of the oscillator within a selected frequency range. Using capacitors to change the frequency range of the oscillator reduces variations of the oscillator output frequency.

REFERENCES:
patent: 3931588 (1976-01-01), Gehweiler
patent: 4052673 (1977-10-01), Herzog
patent: 4091335 (1978-05-01), Giolma et al.
patent: 4625181 (1986-11-01), Bichler
patent: 4626798 (1986-12-01), Fried
patent: 4656369 (1987-04-01), Lou
patent: 4694261 (1987-09-01), Ewen et al.
patent: 4695808 (1987-09-01), Cabaniss et al.
patent: 4771251 (1988-09-01), Allen et al.
patent: 4879530 (1989-11-01), Wilhelm et al.
patent: 4978927 (1990-12-01), Hausman et al.
patent: 5012142 (1991-04-01), Sonntag
patent: 5028888 (1991-07-01), Ray
patent: 5036216 (1991-07-01), Hohmann et al.
patent: 5038118 (1991-08-01), Langenkamp
patent: 5136260 (1992-08-01), Yousefi-Elezei
patent: 5208557 (1993-05-01), Kersh, III

Affiliated with

Also associated with

Rating

Controllable multi-phase ring oscillators with variable current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controllable multi-phase ring oscillators with variable current , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controllable multi-phase ring oscillators with variable current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2101601