METHODS AND APPARATUS TO CAPTURE SWITCH CHARGE INJECTIONS AND COMPARATOR KICKBACK EFFECTS
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United States of America Patent
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Issued Date -
Jun 27, 2024
app pub date -
Mar 31, 2023
filing date -
Dec 22, 2022
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Abstract
An example apparatus includes: controller circuitry configured to: provide switch signals to capacitive digital to analog converter (C-DAC) circuitry, the C-DAC circuitry including switches; configuring the switches into a third configuration begin an Auto Zero (AZ) phase with a third switch in a closed state; configuring the switches into a fourth configuration to repeat the transition of the third switch to the open state corresponding to a first configuration; configuring the switches into a fifth configuration to repeat the transition of a first switch and a second switch to the open state corresponding to a second configuration; configuring the switches into a sixth configuration to repeat the transition of the third switch to the closed state corresponding to a second configuration; and performing an AZ decision with the switches in the sixth configuration.
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