Accurate integrated oscillator circuit

Details Accurate integrated oscillator circuit Accurate integrated oscillator circuit

1996-05-06

1997-12-16

Callahan, Timothy P.

Oscillators

Solid state active element oscillator

Transistors

331113R, 331143, 331176, H03B 524

Patent

active

056990243

ABSTRACT:
An accurate integrated oscillator circuit includes a first circuit generating a substantially temperature independent, or a linearly temperature dependent, reference current and a second circuit which is programmable to incrementally increase the reference current to a desired current level. A third circuit includes first and second capacitors and an oscillator output switchable between first and second output levels. The third circuit is responsive to a first charge value on the first capacitor, due to the reference current flowing therethrough, to switch the oscillator output to the first level while resetting the second capacitor to its uncharged state, and to a second charge value on the second capacitor, due to the reference current flowing therethrough, to switch the oscillator output to the second level while resetting the first capacitor to its uncharged state. The oscillator circuit is preferably formed of a single integrated circuit and has an adjustable center frequency.

REFERENCES:
patent: 4982169 (1991-01-01), Wyman
patent: 5070311 (1991-12-01), Nicolai
patent: 5084685 (1992-01-01), Moeller et al.
patent: 5093633 (1992-03-01), Benhamida
patent: 5105169 (1992-04-01), Yamazaki et al.
patent: 5142249 (1992-08-01), Hirotomi
patent: 5212459 (1993-05-01), Ueda et al.
patent: 5311150 (1994-05-01), Engbretson et al.

Affiliated with

Also associated with

Rating

Accurate integrated oscillator circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-210802