High gain feedback amplifier

Details High gain feedback amplifier High gain feedback amplifier

1986-10-20

1988-07-12

Wan, Gene

Amplifiers

Signal feedback

Multiple feedback paths

330291, H03F 136

Patent

active

047572701

ABSTRACT:
Feedforward of the source signal into the compensation mode of an operational amplifier produces more than an order of magnitude improvement in small-signal capability at high frequencies. The technique is useful for active filters and wideband amplifiers. Further improvement will be available using amplifiers designed for this approach.

REFERENCES:
patent: 4028634 (1977-06-01), Tentarelli
Geiger, R. & Budak, A. "Design of Active Filters Independent of First and Second Order Operational Time Constant Effects", IEE Trans 1981, CAS-28, pp. 749-759.
Lopes, P. B. & Bhattacharyya, B. B., "Classification, Generation and Evaluation of Actively Compensated Noninverting Finite Gain Amplifiers", IEEE J Electronic Circ. and Syst., 1984, 5, pp. 177-189.
Dobkin, R. C., in Linear Applications Handbook, National Semiconductor Corporation, 1980, LB2, 14, 18.
Wilson, G., "Compensation of Some OA based RC Active Networks", IEEE Trans, 1976, CAS-23, pp. 443-446.
Natarajan, S. & Bhattacharyya, B. B., "Design of Actively Compensated Finite Gain Amplifiers for High Frequency Applications", IEEE Trans, 1980, CAS-27, pp. 113-119.

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