Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2012, Vol. 23 ›› Issue (2): 109-113 doi: 10.13538/j.1001-8042/nst.23.109-113

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Waveform digitization utilizing switched-capacitor arrays

WANG Jinhong1,2 ZHAO Lei1,2 FENG Changqing1,2 LIU Shubin1,2 AN Qi1,2,*   

  1. 1State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China 2Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
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WANG Jinhong, ZHAO Lei, FENG Changqing, LIU Shubin, AN Qi . Waveform digitization utilizing switched-capacitor arrays.Nuclear Science and Techniques, 2012, 23(2): 109-113     doi: 10.13538/j.1001-8042/nst.23.109-113

Abstract:

Compared with traditional waveform digitization with flash-ADCs, waveform digitization with switched-capacitor arrays (SCAs) is able to achieve the sampling speed above 1 GS/s without degrading the analog to digital conversion precision significantly. In this paper, we present the implementation of a fast waveform digitization system with the use of SCAs, and evaluate its performance of waveform digitization and the waveform timing. At about 5 GS/s, the dynamic input range of the digitizer is about 66 dB, and its timing precision is about 20 ps (RMS).

Key words: Waveform digitizer, Switched-capacitor arrays, Waveform timing