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LMS calibration of sampling timing for time-interleaved A/D converters

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3 Author(s)
T. Oshima ; (Hitachi Ltd, Central Research Laboratory, 1-280 Higashi-koigakubo, Kokubunji-shi, Tokyo 185-8601, Japan) E-mail: ; T. Takahashi ; T. Yamawaki

Novel sampling-timing calibration for time-interleaved A/D converters is proposed and verified by simulation. An FIR-filter structure exploiting the sampling theorem provides a simple but accurate time derivative of the converted signal and hence enables reliable estimation and compensation of sampling-time deviation of each unit ADC assisted by a reference converter and an LMS algorithm.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 12 )