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A Mixed-Signal Large Dynamic Range Front-End ASIC for High Capacitance Detectors | | W.Cheng
; F.Cossio
; M. Da Rocha Rolo
; A.Rivetti
; Z.Wang
; | | Date: |
3 Aug 2019 | | Abstract: | A 64-channel mixed-mode ASIC, suitable for particle detectors of large
dynamic range and high capacitance up to hundreds of pF, is presented here.
Each channel features an analogue front-end for signal amplification and
filtering, and a mixed signal back-end to digitise and store the signal
information. The analogue part consists of a low input-impedance programmable
gain pre-amplifier based on a regulated common-gate (RCG) input stage, two
shapers optimised for time and energy measurements. The back-end part mainly
includes discriminators, TDCs and ADCs, which are used to process the signal
and encode both the time of arrival and the charge in the input signal with a
fully digital output. The programmable gain of the front-end (up to 400 fC
input dynamic range) and the versatile back-end allow the readout of different
gaseous detectors like GEM, MicroMEGAS and MWPC. The ASIC is designed for an
event rate up to 100 kHz per channel and a power consumption less than 9
mW/channel, has been fabricated in a 110 nm CMOS technology. | | Source: | arXiv, 1908.1163 | | Services: | Forum | Review | PDF | Favorites | |
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