Circuit for multiplying an analog value by a digital value
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United States of America Patent
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-
Jan 10, 1995
Grant Date -
N/A
app pub date -
Dec 21, 1993
filing date -
Dec 22, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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