Device selection

the AD9988 can sample frequencies that low. however, you will have to deal with the 1/f noise as you approach DC

Thank you for your timely reply. In addition, I would like to know if eval_ ad9988 adapt to Xilinx vc709 connectivity kit through FMC connector and use FPGA to configure equipment parameters?

Thank you for your timely reply. In addition, I would like to know if eval_ ad9988 adapt to Xilinx vc709 connectivity kit through FMC connector and use FPGA to configure equipment parameters?

it should. please take a look at the eval board schematic to ascertain if the connections are compatible.