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Robert Lacoste's The Darker Side by Robert Lacoste

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Chapter 11 Direct Digital Synthesis 101

Note: This chapter is a corrected and enhanced reprint of the article “The darker side: Direct digital synthesis 101,” Circuit Cellar, no. 217, August 2008.

In Chapter 10, I talked about using a phase-locked loop (PLL) to generate precise and stable frequencies. I also briefly introduced another interesting concept: the direct digital synthesizer (DDS). It is now time to dig into that subject and help you understand how DDS techniques, with their pros and cons, can help you in future projects. So come with me on a journey to DDS World.

In Chapter 10, I talked about using a phase-locked loop (PLL) to generate precise and stable frequencies. I also briefly introduced another interesting concept: the direct ...

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