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Based on the output signal characteristics of the 14MeV neutron microdosimeter,a low noise,low power consumption and large dynamic range readout front-end electronics(FEE)based on 180nm CMOS technology are primarily designed in this work.The key electronic modules designed include a low noise charge sensitive amplifier,a pulse shaper and a peak detect and hold circuit.The key factors influencing on the designed FEE performance are simulated and analyzed.