Timing correction of time-interleaved ADCs

R. van Otten, J.A. Hegt

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Mismatches between the channels of timeinterleaved analog to digital converters (TI-ADCs) cause offset, gain and timing errors of which the timing errors are dominant at high frequencies. The paper explains the mismatches and evaluates existing correction methods. This paper also proposes a background mode, mixed domain, calibration method for timing correction of TI-ADCs. The method improves the SFDR and SNDR of the TI-ADC for time-invariant and time-variant timing mismatches. A hardware demonstrator of the proposed method is realized with off-the-shelf components. The results of the demonstrator are compared with those of existing methods
Original languageEnglish
Title of host publicationProceedings of ProRISC 2009, 20th Annual Workshop on Circuits Systems and Signal Processing, November 26-27, 2009, Veldhoven, The Netherlands
Place of PublicationUtrecht
PublisherSTW Technology Foundation
ISBN (Print)978-90-73461-62-8
Publication statusPublished - 2009


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