28 September 2016 Efficient treatment of offsets of internal components in adaptive sub-ranging A/D converters
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Proceedings Volume 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016; 1003156 (2016) https://doi.org/10.1117/12.2249368
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 2016, Wilga, Poland
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.
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Ł. Małkiewicz, K. Jędrzejewski, "Efficient treatment of offsets of internal components in adaptive sub-ranging A/D converters", Proc. SPIE 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 1003156 (28 September 2016); doi: 10.1117/12.2249368; https://doi.org/10.1117/12.2249368
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