DocumentCode
1374189
Title
Incremental Data Converters at Low Oversampling Ratios
Author
Caldwell, Trevor C. ; Johns, David A.
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Volume
57
Issue
7
fYear
2010
fDate
7/1/2010 12:00:00 AM
Firstpage
1525
Lastpage
1537
Abstract
In this paper the use of incremental A/D converters with low oversampling ratios is investigated. Incremental A/D converters are able to achieve a higher SQNR than delta-sigma modulators at oversampling ratios below 4, allowing them to operate as higher bandwidth converters with medium resolution. The impact of removing the input S/H, as well as analyzing their behaviour at an OSR as low as 1 is explored. An eighth-order cascaded incremental A/D converter is analyzed and shown as an example.
Keywords
analogue-digital conversion; delta-sigma modulation; delta-sigma modulator; incremental A/D converter; incremental data converter; low oversampling ratios; Delta-sigma modulation; incremental analog-digital (A/D) converter; oversampled data conversion; switched capacitor circuits;
fLanguage
English
Journal_Title
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher
ieee
ISSN
1549-8328
Type
jour
DOI
10.1109/TCSI.2009.2034879
Filename
5371888
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