Amplifier with output filtering

Details Amplifier with output filtering Amplifier with output filtering

2011-03-01

2011-03-01

Shingleton, Michael B (Department: 2815)

Amplifiers

With semiconductor amplifying device

Including gain control means

C030S109000, C030S260000, C030S294000, C030S301000

Reexamination Certificate

active

07898334

ABSTRACT:
An amplifier circuit includes an amplifier including an inverting input that communicates with an input signal, a non-inverting input, and an output. A first feedback path communicates with the inverting input and the output of the amplifier. A second feedback path communicates with the inverting input and the output of the amplifier. The first feedback path provides feedback at a lower frequency than the second feedback path. A first resistance has one end that communicates with the output of the amplifier. A first capacitance has one end that communicates with an opposite end of the load resistance. A second resistance has one end that communicates with the inverting input and an opposite end that communicates with the opposite end of the first resistance.

REFERENCES:
patent: 3412342 (1968-11-01), Tonnessen
patent: 4187479 (1980-02-01), Ishizuka et al.

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