A wide dynamic range multi-channel preamplifier/shaper ASIC family for universal low power applications

A universal ASIC family for intermediate energy physics detectors has been designed using a bipolar/JFET technology. The family consists of two 8-channel charge-sensitive preamplifiers (CSP) ZENIT-A2, ZENIT-A3 and a shaper ZENIT-B. The values of switched gain of both CSPs are 80 and 240 mV/pC for ZENIT-A2 and 500 and 1000 mV/pC for ZENIT-A3 with channel-to-channel non-identity not more than ±5%. The CSPs can operate with input capacitance up to 300 pF for low gain and 150 pF for high gain mode. The input signal dynamic range of the shaper is matched to the outputs of both CSPs. The shaper has fast and slow outputs. The CSPs have a power consumption of 13 mW/channel; the shaper of 44 mW/channel.