Apparatus and method for performing small scale subtraction
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United States of America Patent
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-
Jun 13, 1995
Grant Date -
N/A
app pub date -
Nov 12, 1993
filing date -
Nov 12, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A subtracting circuit which is capable of performing highly accurate, small scale subtraction. The subtracting circuit includes a first input capacitance receiving a first input voltage, a first set of inverters connected with an output terminal of the first input capacitance, a second input capacitance connected with an output terminal of the first set of inverters and receiving a second input voltage, and a second set of inverters connected with an output terminal of the second input capacitance, each set of inverters having capacitive feedback. The subtracting result is output from the second set of inverters.
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