High performance low noise charge preamplifier with DC coupling to particle silicon detectors in CMOS technology

Abstract

A low noise, low power CMOS charge preamplifier with DC coupling to particle silicon detectors has been designed. Simulation results show that the detector leakage current can be compensated up to 8 µA. The proposed charge amplifier has been simulated and implemented with a CMOS silicon-on-insulator process. A total RMS output noise voltage of 0.58 mV for a detector capacitance of 10 pF and a DC leakage current of 5 µA and a conversion gain of 2.86 mV/fC with 0.66 mW power consumption have been obtained.