Output common-mode voltage control device of a balanced amplifier.

摘要

The present invention relates to a device for regulating the common-mode output voltage of a balanced amplifier with two differential outputs (S, Ss), comprising a differential stage (D) supplying a correction signal for the said common-mode voltage corresponding to the offset between the mean (VCM) of the voltages on the differential outputs and a reference voltage (VCM0, and a current generator fixing the bias current of the differential stage. According to the invention, the current generator is a generator (M3) controlled only by the output current of the balanced amplifier. <IMAGE>