CMOS Op amp bias circuit

Details CMOS Op amp bias circuit CMOS Op amp bias circuit

1983-03-04

1984-12-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330253, 330254, H03F 345

Patent

active

044892829

ABSTRACT:
A CMOS op amp is disclosed in which one op amp is programmed with a controlled offset voltage and a reference current. The amplifier is constructed so that its gain adjusts to where its output current equals the reference current. Thus its G.sub.m equals the reference current divided by the offset voltage. Other such amplifiers can be slaved to the programmed amplifier so that a plurality of amplifiers can be simultaneously programmed.

REFERENCES:
patent: 4383223 (1983-05-01), Ulmer

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