I am interested in finding an FMC board with ADC and DAC for a low latency application. I am using the FMC-DAQ2 board, and I am seeing a combined latency from ADC internal FPGA loopback to the DAC of around 400 ns. This is using a DAC and ADC sample rate of 1Gsps. The JESD204B is great for higher sample rates, but it adds a lot of cycles of latency. Please advise if you have a lower latency solution.