Data circuit for multiplying digital data with analog
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United States of America Patent
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-
Nov 1, 1994
Grant Date -
N/A
app pub date -
Nov 29, 1993
filing date -
Nov 27, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multiplication circuit for directly multiplying analog and digital data without converting the analog data into digital data or the digital data into analog data. The multiplication circuit controls an analog input voltage by the use of a switching signal of a digital voltage so as to generate an analog output or to cut-off the output. Digital input signals b.sub.0 to b.sub.7 corresponding to a plural number of bits are integrated and given corresponding weights by use of a capacitive coupling unit, and a sign bit is added by the capacitive coupling unit by giving the sign bit double the weight of the most significant bit of the digital input.
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