Monolithic filter gain control circuits and techniques with favorable

Abstract

Circuits and techniques for controlling gain while performing analog frequency-selective filtering of electronic signals are provided. In particular, these circuits and techniques control gain and filter electronic signals in a way that significantly reduces input-referred noise as the gain increases to accommodate smaller input signals, while operating within reasonable power constraints and employing a minimum amount of die space. Such circuits also significantly reduce the circuitry necessary for performing the combined steps of controlling gain and doing analog frequency-selective filtering of electronic signals.