Mismatches between sub-channels limit the dynamic performance of time-interleaved analog-to-digital converters (TI-ADCs). This paper proposes a correlation-based method of calibration for timing mismatches in M-channel TI-ADCs by using the cross-correlation between sub-channels of the output signals to estimate the temporal deviations. The output signal is calibrated by reducing the arbitrary order distortion, which is approximated by multiplying the distortions with the estimated coefficients of mismatch. Furthermore, a reconfigurable strategy composed of stages of arbitrary calibration is proposed to achieve suitable stages with the requisite dynamic performance. Finally, the calibration performance of the proposed method is verified through simulations that use different input signals and strengths of mismatch.

子通道之间的不匹配限制了时间交错的模数转换器（TI-ADC）的动态性能。本文提出了一种基于相关的校准方法，通过使用输出信号子通道之间的互相关来估计时间偏差，从而对M通道TI-ADC中的时序失配进行校准。通过减少任意阶次失真来校准输出信号，该失真是通过将失真乘以估计的失配系数来近似得出的。此外，提出了一种由任意校准阶段组成的可重构策略，以实现具有必要动态性能的合适阶段。最后，通过使用不同输入信号和失配强度的仿真，验证了所提出方法的校准性能。