AD9910 generates a new waveform every time, why does it still generate waveforms at other frequency points – Q&A – Direct Digital Synthesis (DDS)

Category: Hardware

Product Number: AD9910

Software Version: Keil 5

When I change the frequency of the output sine wave by setting the value of the profile register, there will be multiple peaks of other frequencies, and these frequency points are the frequency points I have set before, how to eliminate these frequency points, only on the spectrum analyzer Leave the frequency point I want to output.what’s more, I would like to understand why this happens