The NI PXIe-7975R FPGA module features a digital signal processing (DSP)-focused Xilinx Kintex-7 FPGA and 2 GB/s of onboard DDR3 DRAM. This FPGA incorporates 1,540 DSP slices, which you can use to implement digital filters, custom signal processing, and Fast Fourier Transform (FFT) logic, all of which are commonly found on analog FPGA-based instruments.