Circuit arrangement comprising a differential amplifier

Details Circuit arrangement comprising a differential amplifier Circuit arrangement comprising a differential amplifier

1996-09-18

1998-06-16

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, H03F 345

Patent

active

057677425

ABSTRACT:
A circuit arrangement includes a differential amplifier having two output terminals for supplying two output signals which each have a signal component which is variable about a reference level and is in phase opposition to the other signal component (push-pull signal). A significant improvement of the common-mode rejection is obtained by means of a control circuit adapted to form a sum signal from the output signals, to form a difference signal from the sum signal and a reference signal, and to control the reference level of the two push-pull signals in dependence upon the difference signal.

REFERENCES:
patent: 5254956 (1993-10-01), Nishijima
patent: 5293514 (1994-03-01), Nakagawara

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