Analog-to-digital converter system, electronic device and analog-to-digital conversion method
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United States of America Patent
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Jul 25, 2023
Grant Date -
May 4, 2023
app pub date -
Jan 30, 2020
filing date -
Feb 25, 2019
priority date (Note) -
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Abstract
An ADC system comprises a coarse ADC for determining a coarse word representing an input signal, and an incremental ADC for determining a fine word based on a combination of the input signal and a feedback signal. A first combiner generates a first intermediate output word by joining the coarse word and the fine word. A feedback path generates the feedback signal based on the first intermediate output word. A decimation filter generates a second intermediate output word by filtering the first intermediate output word. A correction block determines a correction word based on the coarse word, on the first and the second predetermined number of bits and conversion parameters of the incremental ADC. A second combiner generates an output word by addition of the second intermediate output word and the correction word.
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