Patent ID: 6603295
Filing Date: 2003-08-05
Classification: G05F

Abstract:
A circuit for the generation of a reference voltage, with a reference voltage source, comprising:a storage capacitor connected to the reference voltage source to receive a voltage applied by a controllable switch and being charged to the reference voltage; the controllable switch having a MOS field-effect transistor with a back gate; a control circuit to apply a refresh signal to said back gate to put said MOS field-effect transistor periodically into either a conducting or a non-conducting state; an auxiliary storage capacitor connected to the back gate and having the voltage applied by the reference voltage source; and, a further switch including a further MOS field-effect transistor with a further back gate and controlled by the refresh signal, wherein a fixed voltage, which is greater than the voltage supplied by the reference voltage source, the fixed voltage applied to the further back gate of the further MOS field-effect transistor.