Method and apparatus for adjusting the pole positions of a differentiating amplifier
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United States of America Patent
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Jul 13, 1993
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N/A
app pub date -
Dec 5, 1990
filing date -
Dec 5, 1990
priority date (Note) -
Expired
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Abstract
An amplifier is compensated for variations in element values. A trim signal is generated based on element values of filter elements of a filter in the amplifier. An RC product in the amplifier is controlled based on the trim signal. The RC product corresponds to a product of a dynamic resistance value of a dynamic resistance element in the filter in the amplifier, and a capacitance value of capacitive elements in the filter. The RC product also determines a pole position of the amplifier. Gain in the amplifier is controlled based on the trim signal so that a desired gain is maintained.
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