Regulated charge sharing analog-to-digital converter (ADC) apparatus and methods
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United States of America
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May 15, 2020
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May 15, 2020
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Abstract
An analog-to-digital converter (ADC) including input circuitry to receive an input analog signal having an analog signal level. Sampling circuitry couples to the input circuitry and includes first and second capacitor circuits to sample the received input analog signal. The first and second capacitor circuits exhibit a relative charge imbalance as a result of the sampling that corresponds to the analog signal level. Regulated charge sharing circuitry regulates charge sharing transfers during multiple charge sharing transfer sequences with the first and second capacitor circuits. A digital output generates multiple bit values based on the charge sharing transfer sequences.
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