Skip to main content

A Simple Technique for Fast Digital Background Calibration of A/D Converters

Abstract

A modification of the background digital calibration procedure for A/D converters by Li and Moon is proposed, based on a method to improve the speed of convergence and the accuracy of the calibration. The procedure exploits a colored random sequence in the calibration algorithm, and can be applied both for narrowband input signals and for baseband signals, with a slight penalty on the analog bandwidth of the converter. By improving the signal-to-calibration-noise ratio of the statistical estimation of the error parameters, our proposed technique can be employed either to improve linearity or to make the calibration procedure faster. A practical method to generate the random sequence with minimum overhead with respect to a simple PRBS is also presented. Simulations have been performed on a 14-bit pipeline A/D converter in which the first 4 stages have been calibrated, showing a 15 dB improvement in THD and SFDR for the same calibration time with respect to the original technique.

Publisher note

To access the full article, please see PDF.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Francesco Centurelli.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Centurelli, F., Monsurrò, P. & Trifiletti, A. A Simple Technique for Fast Digital Background Calibration of A/D Converters. EURASIP J. Adv. Signal Process. 2008, 453218 (2007). https://doi.org/10.1155/2008/453218

Download citation

Keywords

  • Statistical Estimation
  • Random Sequence
  • Calibration Procedure
  • Full Article
  • Error Parameter
\