COULOMB COUNTER WITH OFFSET CALIBRATION

COULOMB COUNTER WITH OFFSET CALIBRATION

This disclosure describes techniques for compensating for amplifier drift. An amplifier is configured to generate an output that triggers a charge counter to generate a charge count value based on a charge count signal. A current digital-to-analog converter (IDAC) is coupled to the amplifier and con...

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Hauptverfasser: Ni, Jinhua, Li, Ailing
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Sprache:eng
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AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Li, Ailing
description This disclosure describes techniques for compensating for amplifier drift. An amplifier is configured to generate an output that triggers a charge counter to generate a charge count value based on a charge count signal. A current digital-to-analog converter (IDAC) is coupled to the amplifier and configured to provide an offset current to a first input of the amplifier. An offset correction circuit is configured to: determine whether a duty cycle associated with the amplifier exceeds a specified threshold and generate a signal to cause the MAC to adjust the value of the offset current to compensate for amplifier drift based on determining whether the duty cycle exceeds the specified threshold.
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An amplifier is configured to generate an output that triggers a charge counter to generate a charge count value based on a charge count signal. A current digital-to-analog converter (IDAC) is coupled to the amplifier and configured to provide an offset current to a first input of the amplifier. 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subjects AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title COULOMB COUNTER WITH OFFSET CALIBRATION
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