Circuit for multiplying an analog value by a digital value

Details Circuit for multiplying an analog value by a digital value Circuit for multiplying an analog value by a digital value

1993-12-21

1995-01-10

Mai, Tan V.

Boots, shoes, and leggings

G06J 100

Patent

active

053813529

ABSTRACT:
A multiplication circuit directly multiplying an analog and a digital data without converting analog/digital or digital/analog converting. An analog input voltage is controlled by a switching signal of a digital voltage so as to generate an analog output or cut-off the outputs. Digital input signals b.sub.0 to b.sub.7 of a plural number of bits is integrated giving weights by means of a capacitive coupling, and a sign bit is added by a capacitive coupling CP with a double weight of the most significant bit ("MSB") of the digital input.

REFERENCES:
patent: 4422155 (1983-12-01), Amir et al.
patent: 4470126 (1984-09-01), Haque
patent: 4475170 (1984-10-01), Haque
Iwai, "The Beginning of Logical Circuit", The Electrical Engineering Handbook, 1980, pp. 144-146.
Miyazaki, "The Analog Usage Handbook", CQ Suppan kabushikigaisha, 1992, pp. 139-140.
"The Electrical Engineering Handbook", Richard C. Dorf, Editor-in-Chief, 1993, pp. 1861-1865.

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