Design and simulation of charge sensitive preamplifier with CMOS FET implemented as feedback capacitor Cfp

ADVANCED NUCLEAR INSTRUMENTATION AND DETECTION

Design and simulation of charge sensitive preamplifier with CMOS FET implemented as feedback capacitor C_fp

WEMBE TAFO Evariste，

SU Hong，

GAO Yanni，

WU Ming

Nuclear Science and Techniques

Vol.19, No.4

pp.241-245

Published in print 20 Aug 2008

DOI：10.1016/S1001-8042(08)60057-3

CLC：TN722.7+3,TL8

42700

In this paper, to design a new preamplifier for optimum performances with charged-particle or heavy-ion detectors, the CMOS FET is implemented as a feedback capacitor C_fp, so that the entire system should be built only with MOSFET. This work is a revolution design because to realize an ASIC for a preamplifier circuit, the capacitor will also be included. We succeed after a simulation to maintain a rise time less than 3 ns, the output resistance less than 94 Ω and the linearity almost good.

Charge sensitive preamplifierCMOS transistorFeedback capacitorSimulation

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