DIGITAL CORRECTION METHOD FOR DYNAMIC RANGE EXPANSION OF MULTIPLE ADCS
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United States of America
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Issued Date -
Nov 28, 2024
app pub date -
Apr 15, 2024
filing date -
Apr 15, 2024
priority date (Note) -
Published
status (Latency Note)
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Abstract
A digital correction method for dynamic range expansion of multiple ADCs includes: obtaining gain and offset correction values of other channels relative to a standard channel CH1 based on iterative computations through positive and negative amplitude auxiliary values and positive and negative base values, then performing gain-offset error correction on the other channels, and then calculating phase differences of the other channels relative to the standard channel CH1 and constructing fractional delay filters with a Farrow structure corresponding to the channels, correcting sampling data X2, . . . , XM after performing the gain-offset error correction. Digital correction of sampling data collected from multiple channels in a multi-ADC system is realized while ensuring that respective dynamic ranges of the sampling data with different gains output by the multiple channels are not lost.
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