IV converter and inertial force sensor using IV converter
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United States of America Patent
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Sep 27, 2016
Grant Date -
Jan 15, 2015
app pub date -
Mar 11, 2013
filing date -
Mar 19, 2012
priority date (Note) -
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Abstract
An IV converter includes a first operational amplifier connected to the capacitive component, a second operational amplifier connected to the first operational amplifier, and an impedance element connected to the second operational amplifier. The first operational amplifier includes a first input terminal connected to the capacitive component, a second input terminal connected to a reference potential, and first and second output terminals. The first output terminal is connected to the first input terminal to constitute a feedback loop. The second operational amplifier includes a third input terminal connected to the second output terminal, a fourth input terminal connected to a reference potential, and a third output terminal connected to the third input terminal via the impedance element to constitute a feedback loop. The phases of the currents output by the first and second output terminals of the first operational amplifier are substantially identical to each other.
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