Programmable RC filter
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United States of America Patent
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Aug 20, 2002
Issued Date -
N/A
app pub date -
Jul 18, 2000
filing date -
Jul 18, 2000
priority date (Note) -
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Abstract
A programmable resistive-capacitive filter circuit enabling on-chip digital control of the frequency response includes a switched resistive type voltage divider network where one of the resistors forms an element of an RC filter and wherein the voltage divider additionally provides a DC bias on an output terminal. One preferred embodiment of the invention is directed to a programmable bandpass filter including MOSFET type semiconductor devices which are utilized as switched resistive elements of the filter.
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