Push-pull-type amplifier circuit

Details Push-pull-type amplifier circuit Push-pull-type amplifier circuit

1993-12-03

1995-04-11

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

With compensation

330253, 327379, 327427, H03F 130, G06G 710

Patent

active

054061458

ABSTRACT:
A push-pull-type amplifier circuit has three current mirror circuits CM1, CM2, CM3 and transistors M6, M7 connected between a reference current supply I.sub.R and output transistors M2, M3 for controlling an idling current flowing through the output transistors M2, M3 so as to be proportional to a current flowing through the reference current supply I.sub.R so that the idling current will be stabilized irrespective of variations in a power supply voltage. An operational amplifier which incorporates the push-pull-type amplifier circuit as an output stage circuit is highly stable in operation, and can be designed in a simple arrangement without having to take into account power supply voltage variations.

REFERENCES:
patent: 4342004 (1982-07-01), Iida et al.
patent: 4524328 (1985-06-01), Abou et al.
patent: 4524329 (1985-06-01), Abou
patent: 4580070 (1986-04-01), Westman
patent: 4912425 (1990-03-01), Kobayashi et al.
patent: 5057789 (1991-10-01), Nagaraj
patent: 5200654 (1993-04-01), Archer

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