Waveform digitization utilizing switched-capacitor arrays

NUCLEAR ELECTRONICS AND INSTRUMENTATION

Waveform digitization utilizing switched-capacitor arrays

WANG Jinhong，

ZHAO Lei，

FENG Changqing，

LIU Shubin，

AN Qi

Nuclear Science and Techniques

Vol.23, No.2

pp.109-113

Published in print 20 Apr 2012

DOI：10.13538/j.1001-8042/nst.23.109-113

38300

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).

Waveform digitizerSwitched-capacitor arraysWaveform timing

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