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Histogram Tests for...
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Björsell, NiclasHögskolan i Gävle,Ämnesavdelningen för elektronik
(author)
Histogram Tests for Wideband Applications
- Article/chapterEnglish2008
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LIBRIS-ID:oai:DiVA.org:kth-7591
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-7591URI
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https://doi.org/10.1109/TIM.2007.908274DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-2519URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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QC 20100629
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Characterization and testing of analog-to-digital converters (ADCs) are important for many reasons. A histogram test is a common method to characterize the linearity features of an ADC. Two commonly used stimulus signals are sine waves and Gaussian noise. This paper presents a metrological comparison between Gaussian and sine-wave histogram tests for wide-band applications, that is, we evaluate the performance of the characterization of the ADC and the usability of postcorrection. A postcorrection procedure involves the characterization of the ADC nonlinearity and then the use of this information by processing the ADC output samples to remove the distortion. The results show that the Gaussian histogram test gives reasonable accuracy in measuring nonlinearities. However, it does not result in a suitable model for postcorrection in wideband applications. A single-tone sine-wave histogram will be a better basis for postcorrection. The best result can be obtained if the lookup table is trained with several single-tone sine waves in the frequency band.
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Händel, Peter,1962-KTH,Signalbehandling,ACCESS Linnaeus Centre,Signal Processing Laboratory, Royal Institute of Technology, Stockholm, Sweden(Swepub:hig)perhal
(author)
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Högskolan i GävleÄmnesavdelningen för elektronik
(creator_code:org_t)
Related titles
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In:IEEE Transactions on Instrumentation and Measurement57:1, s. 70-750018-94561557-9662
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