Whether providing agile sources of low-phase-noise variable-frequencies with good spurious performance for communications, or simply generating a frequency stimulus in industrial or biomedical test equipment applications, convenience, compactness, and low cost are important design considerations. The ability to accurately produce and control waveforms of various frequencies and profiles has become a key requirement common to a number of industries. Why would one use a direct digital synthesizer (DDS)? Aren’t there other methods for easily generating frequencies? With advances in design and process technology, today’s DDS devices are very compact and draw little power. Because operations within a DDS device are primarily digital, it can offer fast switching between output frequencies, fine frequency resolution, and operation over a broad spectrum of frequencies. Ask The Application Engineer-33: All About Direct Digital SynthesisĬolm Slattery Download PDF What is Direct Digital Synthesis?ĭirect digital synthesis (DDS) is a method of producing an analog waveform-usually a sine wave-by generating a time-varying signal in digital form and then performing a digital-to-analog conversion.
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