CAEN Standard Digitizers are platform independent instruments housing high speed (up to 5 GS/s) multichannel ADCs with local memory and FPGAs for real-time data processing.Available in different form factors, VME, NIM and Desktop, they are the result of all the experiences collected by CAEN in signal processing and data acquisition systems and have been designed driven by physics and related applications as Medical Imaging, Homeland Security and Environmental Monitoring.