Patent ID: 8106709

Claim:
An electronic circuit comprising: a first variable gain amplifier, for amplifying a signal at an input to provide a first amplified signal; a first gain control block to provide a first gain control signal; a filter receiving said first amplified signal, to provide a filtered signal; a second variable gain amplifier, for receiving and amplifying said filtered signal; a second gain control bock, to provide at least one second gain control signal derived from said filtered signal, one of said at least one second gain control signal to control the gain of said second variable gain amplifier; and a bounding block for receiving one of said at least one second gain control signal from said second gain control block and said first gain control signal, and for generating therefrom a bounded gain control signal to control gain of said first variable gain amplifier by limiting said at least one second gain control signal from said second gain control block, in dependence on a value of said first gain control signal.