An efficient digital calibration technique for timing mismatch in time-interleaved ADCs

作者：Chen Hongmei^*; Jian Maochen; Yin Yongsheng; Lin Fujiang; Cui Qing

来源：IEICE Electronics Express, 2016, 13(13): 20160524.

DOI：10.1587/elex.13.20160524

• time-interleaved ADC
• timing mismatch
• error estimation
• error compensation

An efficient digital calibration technique for timing mismatch in time-interleaved ADCs is presented. It depends on the phase detection between a reference clock and the sampling clock of each sub-ADC in TIADC system. A method of variable delay line is used to compensate the timing mismatch. The mismatch detection and compensation form a feedback loop and can achieve a real-time tracking and correcting. Simulation results showed that this technique can have the timing mismatch calibrated quickly and correctly within the entire Nyquist sampling frequency by the virtue of a smaller hardware, and can be applied to any number of TIADC.

• 出版日期2016-7-10
• 单位中国科学技术大学; 合肥工业大学