Time-interleaved analog-to-digital conversion circuit having polyphase correction filter
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United States of America Patent
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Apr 16, 2013
Grant Date -
Sep 29, 2011
app pub date -
Mar 25, 2011
filing date -
Mar 25, 2010
priority date (Note) -
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Abstract
Time-interleaved analog-to-digital (AD) conversion circuit, which includes first and second AD converters that generate first and second digital signal sequences by converting an analog input signal into first and second digital signals with a first frequency at first and second timings mutually different with each other is disclosed. The AD conversion circuit further includes a FIFO that receives the first and second digital signal sequences, and a correction filter including first and second portions that are supplied with a common clock signal. The correction filter generates a first corrected digital signal sequence by adding the first synchronized digital signal sequence and the second synchronized digital signal sequence passed through the first portion of the correction filter, and a second corrected digital signal sequence by passing the second synchronized digital signal sequence through the second portion of the correction filter.
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