Operational amplifier circuit

Details Operational amplifier circuit Operational amplifier circuit

1982-08-02

1984-07-31

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, H03F 345

Patent

active

044633190

ABSTRACT:
An operational amplifier includes a PNP differential amplifier operable for low common mode input voltages and an NPN differential amplifier operable for high common mode input voltages so that the operational amplifier is operable over a range of common mode input voltages that includes substantially the positive and negative supply voltages.

REFERENCES:
patent: 3745477 (1972-01-01), Freeborn

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