Automatic gain control apparatus for digital variable-gain ampli

Details Automatic gain control apparatus for digital variable-gain ampli Automatic gain control apparatus for digital variable-gain ampli

1991-03-14

1992-05-26

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including gain control means

330281, H03G 330

Patent

active

051172011

ABSTRACT:
Automatic gain control apparatus comprises a digitally adjustable amplifier, two threshold detectors with adjustable hysteresis, a latch and a control stage with an up/down counter. The latch stores only the logic states of the two threshold detectors. The digital output of the up/down counter is changed in value at the frequency of a first or second clock signal. The output of the up/down counter controls the gain of the amplifier.

REFERENCES:
patent: 3464022 (1969-08-01), Locheed et al.
patent: 3879672 (1975-04-01), Milanes
patent: 4066977 (1978-01-01), Chambers et al.
patent: 4570127 (1986-02-01), Tanimoto et al.
patent: 5036527 (1991-07-01), Halin et al.

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