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Pipelined analog-digital converters integral nonlinearity modeling for post-correction
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Signal Processing Lab)ORCID iD: 0000-0002-2718-0262
University of Gävle. (ITB/Electronics)
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-6855-5868
2010 (English)In: 17th Symposium IMEKO TC4 - Measurement of Electrical Quantities, 15th International Workshop on ADC Modelling and Testing, and 3rd Symposium IMEKO TC19 - Environmental Measurements, 2010, 585-590 p.Conference paper, Published paper (Refereed)
Abstract [en]

An input-dependent integral nonlinearity (INL) model is developed for pipeline ADC post-correction. The INL model consists of a static and dynamic part. The INL model is subtracted from the ADC digital output for compensation. Static compensation is performed by adjacent sets of gains and offsets. Each set compensates a certain output code range. The frequency content of the INL dynamic component is used to design a set of filter blocks that performs ADC compensation in the time domain. The compensation scheme is applied to measured data of two 12-bit ADCs of the same type (Analog Devices AD9430). Significant performance improvements in terms of spurious free dynamic range (SFDR) are obtained.

Place, publisher, year, edition, pages
2010. 585-590 p.
Keyword [en]
Input-dependent integral nonlinearity (INL), ADC compensation, spurious free dynamic range (SFDR), signal-to-noise and Distortion ratio (SINAD), intermodulation istortion (IMD)
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-65728Scopus ID: 2-s2.0-84872533065ISBN: 978-161782338-1 (print)OAI: oai:DiVA.org:kth-65728DiVA: diva2:483560
Conference
17th Symposium IMEKO TC4 - Measurement of Electrical Quantities, 15th International Workshop on ADC Modelling and Testing, and 3rd Symposium IMEKO TC19 - Environmental Measurements; Kosice; Slovakia; 8 September 2010 through 10 September 2010
Note

QC 20120418

Available from: 2012-01-25 Created: 2012-01-25 Last updated: 2014-08-15Bibliographically approved

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Händel, PeterJansson, Magnus

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  • apa
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