Introduction - If you have any usage issues, please Google them yourself
Design background: in recent years field programmable gates array (FPGA) technology obtained A rapid development and extensive application of its resource capacity, working frequency and integration have been greatly improved, make use of FPGA realizing some special Digital integrated circuit got everyone s attention, and based on FPGA realizing Direct Digital frequency Synthesizer namely Direct Digital Synthesizer (DDS) is more the advantages, has the flexible interface and the control mode, A relatively short period of time, A wide conversion bandwidth, and phase change and continuous frequency resolution higher advantages, its also to designers based on integrated circuit to realize provides an alternative method, with the D/A converter and low pass filter (together) and can form LPF of arbitrary wave form of signal generator.