Offset compensated switched capacitor circuits

Details Offset compensated switched capacitor circuits Offset compensated switched capacitor circuits

1984-05-04

1985-09-24

Mullins, James B.

Amplifiers

With periodic switching input-output

330 51, 330109, H03F 114

Patent

active

045435340

ABSTRACT:
A switched capacitor type amplifier system including an operational amplifier is provided with compensating capacitive coupling during the non-sampling portion of the cycle from the output of the operational amplifier to its input, to avoid output discontinuities, and to provide compensation for the offset voltage of the operational amplifier. The circuit includes a two phase clock, with the signal input to the input capacitor being alternately sampled and blocked, and the capacitive compensation circuit mentioned above being alternately blocked and connected, respectively, during successive phases of the clock operation. Special circuitry for preventing "clock feed-through" and for implementing a Multiplying Digital to Analog Converter, or MDAC, are disclosed.

REFERENCES:
patent: 3611356 (1971-10-01), Jensen
patent: 4306196 (1981-12-01), Dwarakanath et al.
patent: 4393351 (1983-07-01), Gregorian et al.

Affiliated with

Also associated with

Rating

Offset compensated switched capacitor circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Offset compensated switched capacitor circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Offset compensated switched capacitor circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1616252