======  Direct Digital Synthesizer  ======
Direct Digital Synthesizers (DDS) are frequency synthesizers creating variable frequency arbitrary waveforms from a single, fixed-frequency reference clock. Many kinds of designs are used.

===== Useful links =====

A good tutorial about the designs of DDS is here : [[http://www.ieee.li/pdf/essay/dds.pdf|A Technical Tutorial on Digital Signal Synthesis]]\\


===== Discussion =====

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The " Direct Digital Synthesizers" (DDS ) are synthesizers that can generate arbitrary waveforms at various frequencies from a fixed reference frequency.

[[DDS applications]]

[[various programming mode]]

[[Example of development around the AD9959 DDS]]

[[programs to communicate with the DDS]]