High-resolution TDL-TDC system for MTCA.4 standard

In this contribution, we present a high-resolution, multi-channel time measuring system (TDC) on an AMC board for MTCA.4 standard. The system allows to measure the inputs with a resolution of less than 25 ps r.m.s. The TDC implemented into the FPGA (Xilinx Virtex5 70T in 67-nm technology, 10000 slices) receives signals from an analog front-end connected via High-Pin-Count (HPC) FMC interface and composed of 32 comparators whose thresholds are user-programmable via software. The measurement is totally performed and decoded into the FPGA device. The configuration of the TDC and the communication of the measurements are performed via PCI-E bus.