Device for regulating the common mode voltage at the output of a

Details Device for regulating the common mode voltage at the output of a Device for regulating the common mode voltage at the output of a

1994-02-16

1995-10-03

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, H03F 345

Patent

active

054555396

ABSTRACT:
A device for regulating the common mode output voltage of a balanced amplifier having two differential outputs, including a differential stage providing a correction signal of the common mode voltage corresponding to the difference between a reference voltage and the average differential output voltage of the amplifier, and further including a current generator that sets a polarization current of the differential stage, the current generator being controlled by the output current of the balanced amplifier.

REFERENCES:
patent: 3444476 (1969-05-01), Leidich
patent: 4667165 (1987-05-01), De Weck
patent: 4904953 (1990-02-01), McCormack
patent: 5187448 (1993-02-01), Brooks et al.
IEEE International Solid State Circuits Conference, vol. 34, Feb. 1991, New York, pp. 278-329, G. Nicollini, et al., "A-78dB THD 100 Ohm Differential Driver For ISDN Applications".

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