INSTRUMENTATION AMPLIFIER CAPABLE OF COMPENSATING OFFSET VOLTAGE
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Aug 8, 2024
filing date -
Aug 8, 2024
priority date (Note) -
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Abstract
An instrumentation amplifier includes an input chopping circuit configured to convert differential input voltages into differential chopping input voltages according to a chopping signal; a compensation voltage input circuit configured to generate differential compensation voltages according to differential compensation signals; a compensation chopping circuit configured to generated signals by performing chopping operation on the differential compensation voltages according to the chopping signal and to provide the signals to the compensation voltage input circuit; an amplifier circuit configured to generate differential output voltages from the differential chopping input voltages and the differential compensation voltages; a modulation circuit configured to modulate the differential output voltages; an output chopping circuit configured to generate a bitstream signal by converting phase of an output of the modulation circuit according to the chopping signal; and a filter circuit configured to filter the bitstream signal.
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