A low noise, low power BiCMOS preamplifier-shaper for microstrip detectors using DMILL process and irradiation measurements

A low noise, low power consumption BiCMOS preamplifier-shaper for microstrip detector readout in the future LHC experiments has been designed and fabricated using the radiation hard SOI BiCMOS-PJFET process of DMILL. In the present prototype, an ENC noise of 571 electrons at 0 pF with a noise slope of 37 electrons/pF has been obtained for a shaping time of 25 ns, a gain of 30 mV/MIP and a power consumption of 1 mW per channel. Measurements after irradiations by γ photons and neutrons are also presented in this paper.