High current, very wide band transconductance amplifier

Details High current, very wide band transconductance amplifier High current, very wide band transconductance amplifier

1989-09-21

1990-10-23

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, H03F 345

Patent

active

049655299

ABSTRACT:
A high-current, very-wide-band transconductance amplifier includes a differential voltage to current converter and a plurality of complementary unipolar current mirror cells. The differential voltage to current converter isolates the input voltage terminal from the common side of the output load current terminal. A plurality of positive current mirror cells are connected in parallel and a plurality of negative current mirror cells are connected in parallel to avoid the need for a single low resistance current sensing resistor and the fabrication problems inherent in such resistors.

REFERENCES:
patent: 4390848 (1983-06-01), Blauschild
patent: 4528515 (1985-07-01), Gross
patent: 4555672 (1985-11-01), Segal
patent: 4580106 (1986-04-01), Vittoz
patent: 4689607 (1987-08-01), Robinson
patent: 4723110 (1988-02-01), Voorman
patent: 4797629 (1989-01-01), Wildlar
patent: 4823092 (1989-04-01), Pennock
Feldman, "Anti-Negative Feedback for Hi-Fi Amplifiers", Radio-Electronics, ol. 52, No. 3, Mar. 1981, pp. 52-54.

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