Balanced amplifier using single-ended output operational amplifi

Details Balanced amplifier using single-ended output operational amplifi Balanced amplifier using single-ended output operational amplifi

1998-04-28

1999-11-23

Pascal, Robert

Amplifiers

Sum and difference amplifiers

330295, H03F 345

Patent

active

059907371

ABSTRACT:
A balanced amplifier includes first and second multi-input single-ended output differential amplifiers having matched characteristics and a feedback circuit. The feedback circuit connects differential input terminals and output terminals of the first and second multi-input single-ended output differential amplifiers so that all of the differential input terminals of the first and second multi-input single-ended output differential amplifiers are virtually shorted.

REFERENCES:
patent: 3623140 (1971-11-01), Nercessian
patent: 4494077 (1985-01-01), Fukaya et al.
patent: 5166635 (1992-11-01), Shih
patent: 5796301 (1998-08-01), Tanabe et al.
M. Banu, et al. "Fully Differential Operational Amplifiers With Accurate Output Balancing", IEEE Journal of Solid-State Circuits, vol. 23, No. 6, Dec. 1988, pp. 1410-1414.

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