Variable gain amplifier

Details Variable gain amplifier Variable gain amplifier

1983-01-10

1984-07-24

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330144, 330284, 330295, H03G 310

Patent

active

044620039

ABSTRACT:
A variable gain amplifier including common emitter input transistor, a plurality of common base switching transistor to form a cascode amplifier with said input transistor and a resistive network including a plurality of series resistors is disclosed. A plurality of predetermined gains are obtained by programming the resistors. The resistive network may be shared by two or more variable gain amplifiers to provide a selection amplifier.

REFERENCES:
patent: 4328465 (1982-05-01), Takaoka et al.

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