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What are the trick results requirements from an effective DDS oriented system?

What are the trick results requirements from an effective DDS oriented system?

You’ll have fun with a few unmarried DDS equipment one to work on a single grasp clock in order to production two signals whose stage matchmaking may then end up being in person regulated. When you look at the Figure 8, a couple AD9834s is actually set on a single source clock, with the exact same reset pin getting used so you can upgrade one another bits. Using this settings, you can easily would I-Q modulation.

An excellent reset have to be asserted shortly after power-up and just before animated people studies with the DDS. So it kits the latest DDS production so you’re able to a well-known stage, which serves as the average source area that allows synchronisation away from several DDS devices. Whenever the newest data is delivered simultaneously to help you multiple DDS units, a defined phase relationship would be handled, in addition to their relative phase counterbalance is going to be predictably shifted by form of the phase-counterbalance register. The fresh new AD9833 and you may AD9834 features a dozen bits of stage quality, with an excellent solution off 0.1 degree. [For further information on synchronizing several DDS tools please pick Application Notice An-605.]

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