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Impact of random channel mismatch on the SNR and SFDR of time-interleaved ADCs

AuthorsLéger, G. ; Peralías, E. ; Rueda, Adoración ; Huertas-Díaz, J. L.
Issue Date2004
PublisherInstitute of Electrical and Electronics Engineers
CitationIEEE Transactions on Circuits and Systems Part 1 Fundamental Theory and Applications 51(1): 140–150 (2004)
AbstractUsing several ADCs (Analog to Digital Converters) in parallel with convenient time offsets is considered as an efficient way to push the speed limits of data acquisition systems. However, a serious drawback of this time-interleaving technique is that any mismatch between the channels will damage the precision. This paper gives a probabilistic description of the problem, studying the impact of time skews, gain and offset mismatches. The Probability Density Function (PDF) of both Signal-to-Noise Ratio (SNR) and Spurious-Free-Dynamic Range (SFDR) are explicitly calculated, giving access to important statistical parameters. It is shown that the SNR and SFDR dispersion should not be neglected in making practical considerations for design decisions.
DescriptionEl pdf del artículo es la versión post-print.
Publisher version (URL)http://dx.doi.org/10.1109/TCSI.2003.821301
Appears in Collections:(IMSE-CNM) Artículos
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