Filter device including analog and digital circuitry
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United States of America Patent
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Oct 8, 1996
Issued Date -
N/A
app pub date -
Jan 23, 1995
filing date -
Mar 25, 1993
priority date (Note) -
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Abstract
A filter circuit switches a switching mechanism based on multipliers held in a data register DATA RGST as a digital data. Based on the output data of data register DATA RGST, a multiplication circuit M is arranged to have weights corresponding to a capacity of capacitance connected with a common analog input voltage X.
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