DDS board detector signal source schematic

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Overview:
A certain type of missile test equipment circuit board detector mainly completes the fault detection of the circuit board of the test equipment. The detection system requires the excitation signal generation circuit to be small in size, flexible in configuration, high in precision, and fast in conversion speed. FPGA-based DDS signal generators are better able to meet detector requirements than traditional signal generators. Direct Digital Synthesize (DDS) is a frequency synthesis technique that directly synthesizes a desired waveform from the phase concept. It is a third-generation frequency synthesis technology developed after direct frequency synthesis and indirect frequency synthesis. It breaks through the principle of the first two generations of frequency synthesis methods, and performs frequency synthesis based on the concept of "phase". This method can not only produce different The frequency of the sine wave, square wave, triangle wave, and can control the initial phase of the waveform, can also use this method to generate arbitrary waveforms, has been widely used.
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