Patent ID: 8624674

Claim:
An output stage of an integrated class-A amplifier in a technology adapted to a first voltage and configured to be powered under a second voltage greater than the first voltage, comprising: one or more transistors of a first channel type between a first terminal of application of the second voltage and an output terminal of the stage; and transistors of a second channel type between the output terminal and a second terminal of application of the second voltage, comprising: a first transistor of the second channel type having its gate directly connected to an input terminal of the output stage, and at least a second transistor and a third transistor of the second channel type in series between the output terminal and said first transistor, the gate of the second transistor being coupled to a midpoint of a resistive dividing bridge between the output terminal and the gate of the third transistor, and the gate of the third transistor being biased to a fixed voltage.