Patent ID: 7525370
Filing Date: 2009-04-28
Classification: H03F

Abstract:
1. A circuit of generation of a reference voltage by a first MOS transistor of a first channel type connected to a first terminal of application of a supply voltage, said first transistor being in series with a second MOS transistor of the same channel type controlled by an input stage of a transconductance amplifier, a junction point of the first and second transistors defining an output terminal providing the reference voltage, comprising: a first current source of fixed value connecting said first supply terminal to a gate of the first transistor; a second current source of fixed value connecting the second transistor to a second terminal of application of the supply voltage; at least one third MOS transistor of a second channel type connecting the first and second current sources; and a capacitive element directly connecting said output terminal to a conduction terminal of the third transistor to vary the conduction of the third transistor in case of a variation in the output voltage.