High gain low distortion bridge amplifier with feedback

Details High gain low distortion bridge amplifier with feedback High gain low distortion bridge amplifier with feedback

1997-06-05

1999-05-11

Mottola, Steven

Amplifiers

Wheatstone bridge with amplifier in at least one arm

330 84, H03F3/68

Patent

active

059031891

ABSTRACT:
A bridge amplifier circuit comprising two amplifiers in bridge configuration having a feedback path from the output of one of the amplifiers to the reference input of the other amplifier, together with compensation means for reducing the voltage variation at the reference input. In this way offset and distortion are reduced, although the gain of the amplifier circuit is not affected by the presence of the feedback path.

REFERENCES:
patent: 4446442 (1984-05-01), Yokoyama
patent: 4560946 (1985-12-01), Yokoyama
patent: 4721919 (1988-01-01), LaRosa et al.
patent: 4758796 (1988-07-01), Verhoeven et al.
patent: 4922207 (1990-05-01), Botti
patent: 5191297 (1993-03-01), Penman et al.
Data Handbook IC01B "Semiconductors for Radio and Audio Systems", p. 1247, 1995 of Philips Semiconductors.

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