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

作者：Liu, Sujuan^*; Lv, Ning; Ma, Haixiao; Zhu, Anding

来源：Analog Integrated Circuits and Signal Processing, 2017, 90(1): 1-7.

DOI：10.1007/s10470-016-0839-5

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

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.

• 出版日期2017-1
• 单位北京工业大学