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Stochastic analog-to-digital conversion

TitleStochastic analog-to-digital conversion
Publication TypeConference Paper
Year of Publication2005
AuthorsCeballos, J. L., I. Galton, and G. C. Temes
Conference Name48th Midwest Symposium on Circuits and Systems, 2005
Pagination855 - 858 Vol. 1
Date Published08/2005
Conference LocationCovington, KY
ISBN Number0-7803-9197-7

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, di(t) (i = 1, 2, ..., M), are combined to perform the data conversion. Possible combination of the two methodologies is also outlined.