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In this paper,the design and analysis of a new low noise charge sensitive preamplifier for silicon strip,Si(Li),CdZnTe and CsI detectors etc.with switch control feedback resistance were described,the entire system to be built using the CMOS transistors.The circuit configuration of the CSP proposed in this paper can be adopted to develop CMOS-based Application Specific Integrated Circuit further for Front End Electronics of read-out system of nuclear physits,particle physics and astrophysics research,etc.This work is an implemented design that we succeed after a simulation to obtain a rise time less than 3ns.the output resistance less than94Ω and the linearity almost good.