A 0.5mW high dynamic range fast CMOS charge preamplifier

An ultra low-power fast charge preamplifier implemented in 0.35 μm CMOS technology for ion detector readout for space operation is presented. For a 10 pF sensor capacitance, the preamplifier achieves a peaking time of 4.5 ns and pulse-pair resolution (PPR) of 15 ns for an input charge between 50 fC and 5 pC. It operates in a temperature range between -40°C and 85°C.