Programmable integrated front-end for SiPM/PMT PET detectors with continuous scintillating crystal

AMIC architecture has been introduced in previous works in order to provide a genericand expandable solution for implementing large number of outputs SiPM array/PMT detectors. Theunderlying idea in AMIC architecture is to calculate the moments of the detected light distributionin an analog fashion. These moments provide information about energy, x/y position, etc. of thelight distribution of the detected event. Moreover this means that a small set of signals containsmost of the information of the event, thus reducing the number of channels to be acquired.This paper introduces a new front-end device AMIC2GR which implements the AMIC architectureimproving the features of the former integrated devices. Higher bandwidth and filteringcoefficient precision along with a lower noise allow to apply some detector enhancements. Inhomogeneityamong detector elements throughout the array can be reduced. Depth of interactionmeasurements can be obtained from the light distribution analysis. Also a common trigger signalcan be obtained for the whole detector array. Finally AMIC2GR preamplifier stage close to SiPMoutput signals optimizes signal to noise ratio, which allows to reduce SiPM gain by using loweroperating voltages thus reducing dark noise.