Amplifying circuit having a pull-up circuit and a pull-down...

Details Amplifying circuit having a pull-up circuit and a pull-down... Amplifying circuit having a pull-up circuit and a pull-down...

2007-03-14

2008-11-11

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S264000, C330S263000

Reexamination Certificate

active

07449952

ABSTRACT:
An amplifying circuit includes an operational amplifier, a pull-up circuit and a pull-down circuit. The operational amplifier generates a first pull-up signal, a first pull-down signal and an output signal, wherein the phases of the first pull-up signal and the first pull-down signal are out of phase with the output signal. The pull-up circuit includes a first controlling module for outputting a second pull-up signal according to the first pull-up signal, and a first adjusting module for adjusting the output signal according to the second pull-up signal. The pull-down circuit includes a second controlling module for outputting a second pull-down signal according to the first pull-down signal, and a second adjusting module for adjusting the output signal according to the second pull-down signal.

REFERENCES:
patent: 4638260 (1987-01-01), Hamley
patent: 5285168 (1994-02-01), Tomatsu et al.
patent: 5399991 (1995-03-01), Moraveji
patent: 6366169 (2002-04-01), Ivanov
patent: 6392485 (2002-05-01), Doi et al.
patent: 6700422 (2004-03-01), Tang et al.
patent: 7342450 (2008-03-01), Jones

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