IDeF-X HD: A CMOS ASIC for the Readout of Cd(Zn)Te Detectors for Space-Borne Applications

IDeF-X HD is a 32-channel analog front-end with self-triggering capability optimized for the readout of [Formula: see text] pixels CdTe or CdZnTe pixelated detectors to build low power micro-gamma camera. has been designed in standard AMS CMOS 0.35[Formula: text][Formula: text]m process technology. Its consumption 800[Formula: text]W per channel. The energy range ASIC can be extended 1.1[Formula: text]MeV thanks in-channel adjustable gain stage. When no detector connected chip and without input current, 33 electrons rms ENC level achieved after shaping 10.7[Formula: text]s peaking time. Spectroscopy measurements have performed Schottky detectors. We measured an resolution 4.2[Formula: text]keV FWHM at 667[Formula: ([Formula: text]Cs) on single-pixel configuration. Meanwhile, we also 562[Formula: text]eV 666[Formula: 14[Formula: 60[Formula: text]keV, respectively text]Am) 256 small pixel array detection threshold 1.2[Formula: text]keV. Since intended space-borne applications astrophysics, evaluated its radiation tolerance sensitivity single event effects. demonstrated that remained fully functional significant degradation performances 200 krad latch-up was detected putting linear transfer above 110[Formula: text]MeV/(mg/cm 2 ). Good noise performance make well suited X-rays discrimination high resolution. space qualified flies board solar orbiter ESA mission launched 2020.