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

Author

Vogel, Christian ; Kubin, Gernot

Author_Institution

Inst. of Commun. & Wave Propagation, Graz Univ. of Technol., Austria

Volume

1

fYear

2004

fDate

23-26 May 2004

Abstract

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.

Keywords

analogue-digital conversion; circuit simulation; compensation; distortion; mathematical analysis; noise; signal sampling; distortion ratio; mismatch effect; nonlinearity mismatch analysis; nonlinearity mismatch compensation; nonlinearity mismatch mathematical framework; sampling rate; signal-to-noise ratio; spurious-free dynamic range; time-interleaved ADC arrays; Analog-digital conversion; Array signal processing; Dynamic range; Filter bank; Frequency; Laboratories; Nonlinear distortion; Sampling methods; Signal sampling; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328264

Filename

1328264