Common operational amplifier and gain circuit and A/D...

Details Common operational amplifier and gain circuit and A/D... Common operational amplifier and gain circuit and A/D...

2005-09-20

2005-09-20

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S118000, C341S122000, C250S208100, C330S009000, C330S264000, C327S124000

Reexamination Certificate

active

06946987

ABSTRACT:
A common operational amplifier for a pipeline circuit is provided. The common operational amplifier is used by the stage circuits of the pipeline circuit by turns according to a predetermined timing. The common operational amplifier comprises an operational amplifier circuit, a multiplexer circuit and a demultiplexer circuit. The multiplexer circuit is provided for selecting a signal set of a stage circuit to be amplified to couple to the operational amplifier circuit, and the demultiplexer circuit is provided for transmitting the amplified signal set to the corresponding stage circuit.

REFERENCES:
patent: 3886543 (1975-05-01), Marin
patent: 4811017 (1989-03-01), Gulczynski
patent: 6262626 (2001-07-01), Bakker et al.
patent: 6512221 (2003-01-01), Yen et al.
patent: 6734723 (2004-05-01), Huijsing et al.

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