Parasitic compensated switched capacitor integrator

Details Parasitic compensated switched capacitor integrator Parasitic compensated switched capacitor integrator

1986-02-03

1987-01-13

Mullins, James B.

Amplifiers

With periodic switching input-output

328127, 330 51, 330107, 333173, H03F 108

Patent

active

046367381

ABSTRACT:
A switched capacitor integrator for receiving a single input signal is compensated for parasitic capacitance errors with a minimum amount of circuitry. Although a single-ended amplifier is provided, a differential amplifier input is used which receives equal amounts of parasitic charge to effectively cancel charge errors. The size of the compensating capacitive circuitry may be reduced by making the input parasitic capacitance at one of the inputs proportionately larger so that the noise gain in both positive and negative signal paths remains substantially the same.

REFERENCES:
patent: 4565971 (1986-01-01), Brookshire

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