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Description
The CAEN x2740/x2745, x2730, and x2751 digitizers belong to the Digitizer 2.0 family and are designed to meet the high data rate requirements of modern nuclear and particle physics experiments, medical imaging systems, and large-scale detector readouts. These platforms support both triggered acquisition and continuous streaming readout, integrating high-speed Flash ADCs, FPGA-based real-time processing, large DDR4 buffers, and native USB 3.1, 1 GbE TCP, and 10 GbE UDP connectivity. This work provides a performance evaluation of the readouts architectures. Hardware benchmarks were performed employing triggered and streaming readout firmware in order to investigate saturation behavior and identify throughput limitations. In triggered readout with raw waveform transmission over 10 GbE UDP, data rates close to 1.1 GB/s were achieved with no packet loss. In list-mode streaming readout with onboard processing, the maximum event rate is limited by internal FPGA event-sorting algorithm rather than by network bandwidth. Software benchmarks using CAEN FELib and the CoMPASS DAQ software highlight additional decoding and processing bottlenecks.