Input stages for high voltage operational amplifier

Details Input stages for high voltage operational amplifier Input stages for high voltage operational amplifier

1993-11-09

1995-02-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, 330311, H03F 345

Patent

active

053898923

ABSTRACT:
A high voltage operational amplifier includes a first differential stage whose output is supplied to a current mirror amplifier (CMA) comprised of bipolar transistors, for driving a high voltage MOS output transistor. The bipolar CMA is selected and configured to provide low equivalent input noise and low input voltage offset.

REFERENCES:
patent: 4185211 (1980-01-01), Kucharewski
patent: 4897611 (1990-01-01), Laber et al.

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