Channel mismatch calibration in time-interleaved ADCs based on one-dimensional optimization and trigger

被引：0
|
作者：
Pan Zhixiang [1 ]
Ye Peng [1 ]
Yang Kuojun [1 ]
Huang Wuhuang [1 ]
Gao Jian [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Automat Engn, Chengdu 611731, Peoples R China
来源：
PROCEEDINGS OF 2019 14TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT & INSTRUMENTS (ICEMI) | 2019年
基金：
中国国家自然科学基金;
关键词：
Time-interleaved analog-to-digital convertor; mismatch; success-failure strategy; trigger; SINE-FIT; ERRORS;
D O I：
10.1109/icemi46757.2019.9101684
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Time interleaved analog-to-digital convertor (MD() system is widely used in high-speed data acquisition occasions. Mismatches are inevitably brought in this kind of parallel sampling system and studied by numbers of researchers. In this paper, a simple one-dimensional optimization method of classical success-fa ilure strategy is improved to adjust parameter values in calibration procedure adaptively. The cost function of self-adaptive calibration is constructed based on the difference of the ideal sample data and real sample data. In order to synchronize the two types of sample data, trigger is used. Simulation has shown that when an 8-bit TIADC system is calibrated by proposed method, the spurious free dynamic range (SFDR) enhances from 51.1768dB to 75.4267dB, which verifies the effectiveness and simplicity ofproposed method.
引用
收藏
页码：1780 / 1786
页数：7
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