Efficient treatment of offsets of internal components in adaptive sub-ranging A/D converters

Łukasz Michał Małkiewicz , Konrad Jędrzejewski

Abstract

One of the constraints in manufacturing of sub-ranging ADCs with high ENOB, is a necessity to provide that the internal components have very small offsets. Application of readily available solutions consisting in designing “large” components or using dynamic offset cancelation techniques, increases die size and power consumption. The paper proposes an alternative approach free of these unwanted consequences. There are developed and analyzed three methods of reduction of the influence of offsets on the performance of adaptive sub-ranging ADCs that do not require any changes in the structure of their analog part, varying in whether and where the offsets are compensated. On the basis of the results of simulation analysis, we recommend the latter of the examined methods as most preferable in all conditions, enabling elimination of the influence of offsets to the extent depending on the accuracy of their postproduction measurement and representation in the digital part of the converter. Its application allows improvement of achievable ENOB and significant weakening of the requirements to offsets of the internal components and, in effect, reduction of power consumption and manufacturing costs of the adaptive sub-ranging ADCs.
Author Łukasz Michał Małkiewicz ISE
Łukasz Michał Małkiewicz,,
- The Institute of Electronic Systems
, Konrad Jędrzejewski ISE
Konrad Jędrzejewski,,
- The Institute of Electronic Systems
Pages1003156-1-1003156-12
Publication size in sheets0.55
Book Romaniuk Ryszard (eds.): Proc. SPIE. 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, vol. 10031, 2016, SPIE , ISBN 9781510604858, [781510604865 (electronic) ], 1170 p., DOI:10.1117/12.2257157
Keywords in EnglishADC, adaptive ADC, offset, calibration, performance improvement
DOIDOI:10.1117/12.2249368
URL http://dx.doi.org/10.1117/12.2249368
projectResearch on measurement, circuit and signal theory and electronic circuits and systems. Project leader: Romaniuk Ryszard, , Phone: +48 22 234 7986, +48 22 234 5360, start date 15-06-2015, end date 31-12-2016, ISE/2015/DS, Completed
WEiTI Działalność statutowa
Languageen angielski
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Score (nominal)15
ScoreMinisterial score = 15.0, 27-03-2017, BookChapterMatConf
Ministerial score (2013-2016) = 15.0, 27-03-2017, BookChapterMatConf
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