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General Analysis on the Impact of Phase-Skew in Time-Interleaved ADCs

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2 Author(s)
El-Chammas, M. ; Dept. of Electr. Eng., Stanford Univ., Stanford, CA ; Murmann, B.

Time-interleaved analog-to-digital converters (TIADCs) are sensitive to various mismatches that distort the sampled signal. Standard TIADC analysis assumes a narrowband sinusoidal input, which may result in pessimistic matching constraints for system-specific ADCs used with wideband input signals. Closed-form expressions bounding the acceptable phase-skew for wideband systems are derived and are validated through simulations. In one of the examples presented, it is shown that standard analysis can overconstrain the bound on acceptable phase-skew variance by a factor of three.

Published in:

Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:56 ,  Issue: 5 )

Date of Publication:

May 2009

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