Automatic gain control amplifier circuit

Details Automatic gain control amplifier circuit Automatic gain control amplifier circuit

H - Electricity

03

G

330/39

H03G 3/20 (2006.01)

Patent

CA 1258500

AUTOMATIC GAIN CONTROL AMPLIFIER CIRCUIT Abstract An automatic gain control (AGC) amplifier circuit uses a control loop comprising a digital counter which controls a multiplying digital-to-analog converter arranged as an attenuator of the input v to the AGC. The counter is arranged to count up or down depending upon the output signal of the AGC circuit. In addition, a latency can be introduced into the control loop so that in case of most signal envelope variations, the counter is frozen to prevent output fluctuations.

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