A new method of waveform digitization based on time-interleaved A/D conversion  

作　　者：叶春逢 赵雷 封常青 刘树彬 安琪 

机构地区：[1]State Key Laboratory of Particle Detection & Electronics, University of Science and Technology of China [2]Anhui Key Laboratory of Physical Electronics, Department of Modern Physics,University of Science and Technology of China [3]705 Research Division of Electronic Engineering Institute

出　　处：《Chinese Physics C》2013年第11期49-57,共9页中国物理C（英文版）

基　　金：Supported by Knowledge Innovation Program of Chinese Academy of Sciences(KJCX2-YW-N27);National Natural Science Foundation of China(11175176,10476028)

摘　　要：Time interleaved analog-to-digital conversion （TIADC） based on parallelism is an effective way to meet the requirement of the ultra-fast waveform digitizer beyond Gsps. Different methods to correct the mismatch errors among different analog-to-digital conversion channels have been developed previously. To overcome the speed limi- tation in hardware design and to implement the mismatch correction algorithm in real time, this paper proposes a fully parallel correction algorithm. A 12-bit l-Gsps waveform digitizer with ENOB around 10.5 bit from 5 MHz to 200 MHz is implemented based on the real-time correction algorithm.Time interleaved analog-to-digital conversion （TIADC） based on parallelism is an effective way to meet the requirement of the ultra-fast waveform digitizer beyond Gsps. Different methods to correct the mismatch errors among different analog-to-digital conversion channels have been developed previously. To overcome the speed limi- tation in hardware design and to implement the mismatch correction algorithm in real time, this paper proposes a fully parallel correction algorithm. A 12-bit l-Gsps waveform digitizer with ENOB around 10.5 bit from 5 MHz to 200 MHz is implemented based on the real-time correction algorithm.

关 键 词：waveform digitizer time-interleaved analog-to-digital conversion time-skew error digital correctionalgorithms 

分 类 号：TN792[电子电信—电路与系统]