Xmega DDS-based signal generator

frankvh's picture
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The Xmega controls an Analog Devices AD9851 Direct Digital Synthesis (DDS) chip to create sine and square waves of frequencies 0 - 10 MHz (or so) with very high frequency resolution and stability. A matrix keypad is used to enter the desired frequency, and an LCD displays the current frequency.

Schematics, full source code, photos and detailed descriptions can be found at:
http://www.frankvh.com/dds-signa...

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