Stochastic analog-to-digital conversion

This paper suggests a stochastic approach to data conversion. It is applicable to serial, parallel, two-step as well as delta-sigma ADCs and DACs. In the serial implementation of this scheme, a sample-and-hold circuit, a noise source and a comparator are combined with an accumulate-and-dump digital...

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Bibliographic Details
Published in48th Midwest Symposium on Circuits and Systems, 2005 pp. 855 - 858 Vol. 1
Main Authors Ceballos, J.L., Galton, I., Temes, G.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Analog-digital conversion
Computer science
Counting circuits
Data conversion
Drives
Noise reduction
Quantization
Signal to noise ratio
Stochastic processes
Stochastic resonance
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Summary:This paper suggests a stochastic approach to data conversion. It is applicable to serial, parallel, two-step as well as delta-sigma ADCs and DACs. In the serial implementation of this scheme, a sample-and-hold circuit, a noise source and a comparator are combined with an accumulate-and-dump digital stage to perform serial multibit A/D conversion. In the parallel ADC, M nominally identical primitive converter cells with the same input signal, x(t), but with different and uncorrelated random dither signals, d/sub i/(t) (i = 1, 2, ..., M), are combined to perform the data conversion. Possible combination of the two methodologies is also outlined.
ISBN:9780780391970
0780391977
ISSN:1548-3746
1558-3899
DOI:10.1109/MWSCAS.2005.1594236