Circuits and methods to reduce or eliminate signal-dependent modulation of a reference bias

Circuits and methods that improve the performance of electronic circuits and associated analog to digital converters are provided. An electronic circuit that maintains a substantially constant output voltage to a load when receiving a substantially constant input voltage is provided. The electronic circuit includes a voltage booster isolation circuit coupled to a voltage regulation and a buffer circuit which selectively disconnects the buffer circuit from the voltage regulation circuit at or before the occurrence of a pulse induced by the load and which is further configured to provide a boosted bias voltage to the buffer circuit during a switching interval.