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Dynamic Calibration of Undersampled Pipelined ADCs by Frequency Domain Filtering
KTH, School of Electrical Engineering (EES), Signal Processing. (Signal Processing Lab)
KTH, School of Electrical Engineering (EES), Signal Processing. (Signal Processing Lab)ORCID iD: 0000-0002-2718-0262
Stanford University, EE School, Integrated Circuits. (Murmann IC Group)
University of Gävle. (ITB/Electronics)
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2013 (English)In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, Vol. 62, no 7, 1882-1891 p.Article in journal (Refereed) Published
Abstract [en]

Integral nonlinearity (INL) is used for the post-correction of pipelineanalog-digital converters (ADC)s. An input-frequency-dependentINL model is developed for the compensation. The model consistsof a static term that is dependent on the ADC output code and adynamic term that has an additional dependence on the input signalfrequency. The INL model is subtracted from thedigital output for post-correction. The static compensationis implemented with a look-up-table (LUT). The dynamic calibration isperformed by a bank of frequency domain filters using an overlap-add structure.Two ADCs of the same type (Analog Devices AD9430) are compensated in the first three Nyquist bands.The performance improvements in terms of spurious-free dynamic range(SFDR) and intermodulation distortion (IMD) are investigated. Using the proposed method, improvements up to 17 dB are reported in favorable scenarios.

Place, publisher, year, edition, pages
2013. Vol. 62, no 7, 1882-1891 p.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-105862DOI: 10.1109/TIM.2013.2248289ISI: 000320129100002Scopus ID: 2-s2.0-84879067552OAI: oai:DiVA.org:kth-105862DiVA: diva2:572607
Note

QC 20130712

Available from: 2012-11-28 Created: 2012-11-28 Last updated: 2013-07-12Bibliographically approved

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Händel, PeterJansson, Magnus

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