The particle radiation detector readout ASIC RENA3(Readout Electronics for Nuclear Applications)is widely used as preamplifier for its low-noise,but the maximum input charge of RENA3 limits its range.This paper proposes a method to realize the range expansion by paralleling the capacitor at the input of RENA3.Theoretical analysis,PSpice simulation analysis and experimental verification were carried out.The experimental results are consistent with the theoretical analysis and numerical simulation results,which verify the feasibility of the method.This method can also be used to expand the range of other ASIC.
维普
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