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An Extended-Range Incremental CT Sigma Delta ADC with Optimized Digital Filter
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Integrerade komponenter och kretsar.ORCID-id: 0000-0003-3802-7834
2012 (engelsk)Inngår i: 2012 13th International Symposium On Quality Electronic Design (ISQED), IEEE , 2012, s. 179-184Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Extended range approach has been employed in discrete-time incremental sigma-delta analog-to-digital converters to reduce the number of cycles per conversion and therefore the power dissipation. In this work, extended range is combined with continuous-time filter implementation so as to reduce the integrators gain-bandwidth product requirement. The proposed architecture and mathematical analysis are presented using a 3rd order single-loop single-bit sigma-delta modulator as proof-of-concept. In order to overcome the analog-digital transfer functions mismatches, an appropriate digital filter is designed using optimization tools. Behavioral simulations show that the proposed architecture with an optimized filter achieves 13.8 bits resolution with a 4 kSamples/sec sampling rate to comply with a high-resolution biomedical application.

sted, utgiver, år, opplag, sider
IEEE , 2012. s. 179-184
Serie
International Symposium on Quality Electronic Design, ISSN 1948-3295
Emneord [en]
A/D conversion, extended-range sigma-delta ADC, continuous-time
HSV kategori
Forskningsprogram
SRA - Informations- och kommunikationsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-95459DOI: 10.1109/ISQED.2012.6187492ISI: 000309266000026Scopus ID: 2-s2.0-84863637741ISBN: 978-1-4673-1036-9 (tryckt)OAI: oai:DiVA.org:kth-95459DiVA, id: diva2:528491
Konferanse
13th International Symposium on Quality Electronic Design (ISQED) Location: Santa Clara, CA Date: MAR 19-21, 2012
Forskningsfinansiär
Swedish Research Council
Merknad

QC 20120607

Tilgjengelig fra: 2012-06-07 Laget: 2012-05-25 Sist oppdatert: 2013-09-16bibliografisk kontrollert

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10.1109_ISQED.2012.6187492(161 kB)809 nedlastinger
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