CMOS Operational amplifier employing push-pull output stage

Details CMOS Operational amplifier employing push-pull output stage CMOS Operational amplifier employing push-pull output stage

1980-04-10

1983-05-10

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, 330269, H03F 345, H03F 326

Patent

active

043832237

ABSTRACT:
A CMOS operational amplifier includes a biasing scheme for supplying current to a differential stage. A push-pull output stage includes a current sinking transistor which is coupled to a first output of the differential stage. A current mirror is coupled between a second output of the differential stage and the gate electrode of a current sourcing device in the output stage.

REFERENCES:
patent: 4213098 (1980-07-01), Tsividis
patent: 4267519 (1981-05-01), Schade, Jr.
patent: 4284959 (1981-08-01), Heagerty et al.

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