The front-end readout ASIC of a PET with SPM detectors is designed based on TSMC 0.18um CMOS process.The designed chip consists of both the energy and time measurement chain
including RGC pre-amplifier
integrator
shaper
sample and hold circuit
discriminator
monostable circuit and so on.The Hspice simulation results show that
the designed front-end readout ASIC can accomplish the functions of readout and process of the signals from SPM detector