Commutating autozero amplifier

Details Commutating autozero amplifier Commutating autozero amplifier

1977-12-19

1980-02-26

Dahl, Lawrence J.

Amplifiers

With periodic switching input-output

330 51, 330 69, H03F 102

Patent

active

041908058

ABSTRACT:
An active analog signal processing system preferably embodied as an integrated circuit includes a pair of like amplifiers which are alternately switched between a first signal processing mode and a second zeroing mode in which a capacitor in the amplifier circuit is reverse charged to a voltage level equivalent to the average noise voltage level of the system whereby the system automatically cancels the low frequency noise thereof to provide a simple low noise processing system.

REFERENCES:
patent: 3939435 (1976-02-01), Suzuki
patent: 3982196 (1976-09-01), Poujois
patent: 4048574 (1977-09-01), Barbier et al.

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