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Analysis and compensation of nonlinearity mismatches in time-interleaved ADC arrays

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2 Author(s)
Vogel, C. ; Inst. of Commun. & Wave Propagation, Graz Univ. of Technol., Austria ; Kubin, G.

Time-interleaved ADCs (TIADCs) are used to achieve high sampling rates. The drawback of such an architecture are mismatch effects, which decrease the signal-to-noise and distortion ratio (SINAD) and the spurious-free dynamic range (SFDR). Many papers have investigated the problem of mismatches but very few have considered he problem of nonlinearity mismatches. We present a mathematical framework for nonlinearity mismatches, describe their main characteristics, and show an effective compensation method to increase the SFDR.

Published in:

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on  (Volume:1 )

Date of Conference:

23-26 May 2004