Analog multiplier

Details Analog multiplier Analog multiplier

1997-10-10

1999-03-23

Ngo, Chuong Dinh

Boots, shoes, and leggings

327356, G06F 716, G06F 744

Patent

active

058869166

ABSTRACT:
In an analog multiplier of the present invention, in an input portion for feeding a differential current to the common emitter of each of a first and a second differential pair, the differential current is turned back by a current mirror circuit. This allows transistors limiting an input range to operate over a broad range in the forward active region of the collector potential. As a result, the multiplier achieves a broad input range. Further, the base potentials of transistors limiting an output range are lowered by emitter followers. Therefore, such transistors can operate over a broad range in the forward active region of the collector potential, increasing an output range.

REFERENCES:
patent: 4764892 (1988-08-01), Thomas
patent: 5115409 (1992-05-01), Stepp
patent: 5389840 (1995-02-01), Dow
Gray, P.R., et al., "Analog IC Design Techniques", 1994, vol. 2, pp. 169-183.

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