Automatic gain control (AGC) with lock detection

Details Automatic gain control (AGC) with lock detection Automatic gain control (AGC) with lock detection

2007-10-23

2009-08-11

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

Reexamination Certificate

active

07573335

ABSTRACT:
A method, algorithm, circuits, and/or systems for automatic gain control (AGC) are disclosed. In one embodiment, an AGC circuit can include a comparator configured to compare an output of an amplifier against a reference voltage, gain logic configured to decrease a gain of the amplifier when an output of the comparator has a first state, and to periodically increase the gain of the amplifier, a digital-to-analog converter (DAC) configured to receive an output from the gain logic and control the gain of the amplifier, and lock detection logic configured to determine from the output of the gain logic when the gain of the amplifier is in a predetermined range.

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