Patent ID: 8344794

Claim:
A signal monitoring system comprising: a signal filter operable for receiving a first input signal selected from a plurality of signals, operable for generating a first output signal according to said first input signal and a first reference signal, and operable for receiving a feedback signal indicative of said first output signal, said signal filter comprising a plurality of switches to deliver said first input signal and said reference signal to energy storage circuitry in said signal filter selectively, and deliver said first input signal and said feedback signal to said energy storage circuitry selectively; and a signal generator coupled to said signal filter and operable for generating a control signal to control said plurality of switches, operable for controlling a frequency of said control signal to control a dominant pole of said signal filter, operable for controlling said control signal to have a first frequency when said first input signal is switched from a first signal of said plurality of signals to a second signal of said plurality of signals, and operable for controlling said control signal to have a second frequency less than said first frequency when a time interval expires.