Push-pull buffer/amplifier

Details Push-pull buffer/amplifier Push-pull buffer/amplifier

2005-10-25

2005-10-25

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

Reexamination Certificate

active

06958650

ABSTRACT:
A differential circuit includes first, second, third, and fourth transistors each having a control terminal, a first terminal and a second terminal. A first input terminal communicates with the control terminals of the second and third transistors. A second input terminal communicates with the control terminals of the first and fourth transistors. A first output terminal communicates with the second terminal of the second transistor and the first terminal of the fourth transistor. A second output terminal communicates with the second terminal of the first transistor and the first terminal of the third transistor. The first input terminal communicates with the control terminals of the second and third transistors through first and second capacitances, respectively. The second input terminal communicates with the control terminals of the first and fourth transistors through third and fourth capacitances, respectively. A capacitance communicates with the second terminals of the third and fourth transistors.

REFERENCES:
patent: 5581212 (1996-12-01), Huang et al.
patent: 5764105 (1998-06-01), Botker
patent: 5825244 (1998-10-01), Somayajula
patent: 5844443 (1998-12-01), Wong
patent: 6380808 (2002-04-01), Uasa et al.
patent: 2002/0057132 (2002-05-01), Tomita
patent: WO 01/41300 (2001-07-01), None

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