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On Continuous-Time Incremental Sigma Delta ADCs With Extended Range
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0003-3802-7834
2013 (English)In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 62, no 1, 60-70 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, the use of continuous-time implementation in extended-range (ER) incremental sigma-delta analog-to-digital converters is analyzed in order to explore a possible solution to low-power multichannel applications. The operation principle, possible loop filter topologies, and critical issues are considered using a general approach. It is demonstrated that, in order to fully benefit from ER, careful attention has to be paid to the analog-digital transfer function mismatches. A third-order single-bit topology validates the theoretical analysis. Its performance is evaluated while the impact of key circuit nonidealities is quantified through behavioral-level simulations. It is shown that, by applying analog-digital mismatch compensation in the digital domain, it is possible to relax the amplifiers' finite gain-bandwidth product and finite dc gain requirements, thus allowing a power-conscious alternative.

Place, publisher, year, edition, pages
2013. Vol. 62, no 1, 60-70 p.
Keyword [en]
analog-to-digital conversion, Continuous-time, incremental sigma-delta, extended range
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-109782DOI: 10.1109/TIM.2012.2212597ISI: 000312451500007Scopus ID: 2-s2.0-84871022014OAI: oai:DiVA.org:kth-109782DiVA: diva2:584212
Projects
VR ErBio
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research
Note

QC 20130125

Available from: 2013-01-25 Created: 2013-01-08 Last updated: 2017-12-06Bibliographically approved

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