A circuit for controlling a reference node in a sense amplifier

摘要

A circuit (165) is proposed for controlling a reference node (Nr) in a sense amplifier (145) switchable between an operative condition and a stand-by condition, the reference node providing a reference voltage in the operative condition. The circuit includes means (Cp) for bringing the reference node to a starting voltage upon entry into the stand-by condition, first means (Rda1,Rda2) for keeping the reference node at a pre-charging voltage in the stand-by condition, second means (Rdb1,Rdb2) for providing a comparison voltage closer to the pre-charging voltage than the starting voltage, pulling means (Mu1) for pulling the reference node towards a power supply voltage, and control means (210) for activating the pulling means upon entry into the stand-by condition and for disabling the pulling means when the voltage at the reference node reaches the comparison voltage. <IMAGE>