Charge comparator with low input offset

Details Charge comparator with low input offset Charge comparator with low input offset

2007-02-06

2007-02-06

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S161000

Reexamination Certificate

active

11175994

ABSTRACT:
A Direct Current (DC) charge comparator that provides low input offset by feeding complimentary plus and minus charge inputs to a single amplification path via an alternate input path switch. Multiple sample and hold circuits at the output of the amplification path permit comparison of the result when each of the charge inputs travels down each of the paths, to determine a correction.

REFERENCES:
patent: 4121248 (1978-10-01), Coale, Jr.
patent: 5008698 (1991-04-01), Muramatsu et al.
patent: 5661397 (1997-08-01), Deller et al.
patent: 5754056 (1998-05-01), Sauer
patent: 5929800 (1999-07-01), Zhou et al.
patent: 6355926 (2002-03-01), Hubble et al.
patent: 6788563 (2004-09-01), Thompson et al.

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