Operational amplifier

Details Operational amplifier Operational amplifier

1998-08-27

2000-10-24

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, 330300, H03F 345

Patent

active

06137363&

ABSTRACT:
An operational amplifier comprises a differential amplifying circuit and an output circuit. The differential amplifying circuit comprises a pair of input transistors having control terminals connected to an inverting input terminal and a non-inverting input terminal, respectively. The output circuit is connected to the differential amplifying circuit for amplifying an output signal of the differential amplifying circuit and generating an amplified output from its output terminal. In this operational amplifier, the input transistors are bipolar transistors and other transistors are MOS transistors.

REFERENCES:
patent: 3879640 (1975-04-01), Schade, Jr.
patent: 4241313 (1980-12-01), Takehara
patent: 4695750 (1987-09-01), Hara et al.
patent: 5077489 (1991-12-01), Gola et al.
patent: 5101126 (1992-03-01), Butler et al.
patent: 5343164 (1994-08-01), Holmdahl

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