The design of a single particle counter for therapeutical proton beams based on Low Gain
Avalanche Diodes and optimized for very fast signals is carried on in the framework of the INFN
MoVe-IT research project. Fast signal shaping front-end electronics is mandatory in this application in order to deal with particle rates of the order of hundreds of MHz per channel. Two preamplifier architectures, one based on a fast Charge Sensitive Amplifier with self-reset capabilities
and a second one based on a Trans-Impedance Amplifier have been developed in a commercial
CMOS 0.11 µm technology and submitted to the foundry.