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Built-in self calibration for process variation in single-loop continuous-time sigma-delta modulators
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
2010 (English)In: 17th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), 2010, IEEE conference proceedings, 2010, 1136-1139 p.Conference paper, Published paper (Refereed)
Abstract [en]

A novel built-in self calibration technique for single-loop continuous-time sigma-delta modulators is proposed. Using out-of-band test signal injection and digital cancellation, this technique provides an area efficient, highly digital calibration structure to counteract gain variations in the loop filter. The calibration methodology and mathematical analysis are presented using a 2 nd order multibit sigma-delta modulator as a proof of concept. The effect of the finite gain-bandwidth of amplifiers is included when evaluating the calibration method. The proposed technique is validated through corner simulations using behavioral models and it shows that degradation in the signal-to-noise-plus-distortion ratio can be counteracted.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2010. 1136-1139 p.
Keyword [en]
Analog-to-digital converter (ADC), Continuous-time, Digital calibration, Process variations, Sigma-delta modulator
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-50799DOI: 10.1109/ICECS.2010.5724717Scopus ID: 2-s2.0-79953083246ISBN: 978-142448157-6 (print)OAI: oai:DiVA.org:kth-50799DiVA: diva2:462762
Conference
2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010, Athens, 12 December 2010 - 15 December 2010
Note

© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

QC 20111212Available from: 2012-06-12 Created: 2011-12-08 Last updated: 2012-06-12Bibliographically approved

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Rusu, Ana

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Citation style
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