Patent ID: 7863989

Claim:
An oscillator control system comprising: an oscillation module configured to output an oscillator output signal having an amplitude and a common mode; an automatic gain control (AGC) module in operative communication with the oscillation module, and configured to: generate a gain control signal as a function of the amplitude of the oscillator output signal; and generate a replica control signal as a function of the amplitude of the oscillator output signal; a gain control module, in operative communication with the oscillation module, and configured to provide a magnitude of gain to the oscillation module as a function of the gain control signal; a replica bias module, in operative communication with the AGC module, and configured to: generate a replica feedback signal as a function of the replica control signal; compare the replica feedback signal with a reference signal; and generate a bias control signal as a function of comparing the replica feedback signal with the reference signal; and a bias control module, in operative communication with the replica bias module and the oscillation module, and configured to control the common mode of the oscillator output signal as a function of the bias control signal.