Time sharing analog filters control method and magnetic disk system
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United States of America Patent
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-
Dec 4, 2001
Grant Date -
N/A
app pub date -
Sep 3, 1999
filing date -
Sep 7, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A transconductance control circuit is composed of a replica transconductance amplifier and resistance, a reference voltage source, first selectors, a differential amplifier, a voltage-current translate circuit with characteristics equal to the transconductance amplifier which constitutes analog filters. A first switch of the first selectors is connectable for the reference voltage source, and every constant period is made to connect it using clocks at the reference voltage source. A second switch of second selectors is connectable for plural capacitors, and every constant period is made to connect it using clocks at the capacitors.
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