Power amplification circuit and operational amplifier...

Details Power amplification circuit and operational amplifier... Power amplification circuit and operational amplifier...

2007-09-25

2007-09-25

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Nonlinear amplifying circuit

C327S560000

Reexamination Certificate

active

11066604

ABSTRACT:
A power amplifier circuit comprising first and second modules, a current source and a push-pull module. The push-pull module comprises two intermediate transistors and two output transistors. The circuit also comprises third and fourth modules, operating in current mirror mode. Inputs of the third module are respectively connected to one main electrode of one of the intermediate transistors and to a node internal to the first module. Outputs of the fourth module are respectively connected to a main electrode of the other intermediate transistor and to a node internal to the second module. The circuit is designed to form a power output stage of an operational amplifier.

REFERENCES:
patent: 4059808 (1977-11-01), Sakamoto et al.
patent: 4780689 (1988-10-01), Saller et al.
patent: 4833424 (1989-05-01), Wright
patent: 4959622 (1990-09-01), Kearney
patent: 5028881 (1991-07-01), Jackson
patent: 5049653 (1991-09-01), Smith et al.
patent: 5179355 (1993-01-01), Harvey
patent: 6278326 (2001-08-01), Murray et al.
patent: 6535063 (2003-03-01), Gibson et al.

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