Adaptive semiblind background calibration of timing mismatches in a two-channel time-interleaved analog-to-digital converter

Article

Abstract

This paper introduces an adaptive semiblind background calibration of timing mismatches in a two-channel time-interleaved analog-to-digital converter (TIADC). By injecting a test tone at the frequency of half the overall sampling frequency of TIADC, the timing mismatch between two sub-ADCs can be quickly estimated with great accuracy without affecting the normal operation of the TIADC. The estimated coefficient can then be used in compensation module formed by a fixed structure to calibrate the timing mismatches. Simulation results demonstrate the effectiveness of the proposed estimation and correction technique.

Keywords

Time-interleaved analog-to-digital converter (TIADC) Timing mismatches Calibration Semiblind Test tone 

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.College of MicroelectronicsBeijing University of TechnologyBeijingChina
  2. 2.School of Electrical and Electronic EngineeringUniversity College DublinDublin 4Ireland

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