Peer-Reviewed Journal Details
Mandatory Fields
O'Brien V.;Mullane B.
2020
January
Ieee Transactions On Circuits And Systems Ii-Express Briefs
High Order Mismatch Shaping for Low Oversampling Rates
Published
2 ()
Optional Fields
ADC DAC decoder delta sigma (¿ ¿) DEM dynamic element matching element selection logic mismatch shaping oversampling
67
1
42
46
© 2004-2012 IEEE. Delta Sigma data converters employing high order dynamic element matching (DEM) allow for accurate signal conversion in the presence of DAC mismatch. However, at low oversampling rates, current high order DEM decoders provide little or no improvement in error suppression over lower order designs. In addition, the logic requirement of the DEM decoder increases significantly with each additional DAC bit. This brief presents a high order DEM decoder that improves mismatch shaping performance at low to medium oversampling rates by up to 15 dB, while employing methods to reduce the area overhead of the vector quantizer in the design.
1549-7747
10.1109/TCSII.2019.2904180
Grant Details