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AD9910 Recommended for New Designs
The AD9910 is a direct digital synthesizer (DDS) featuring an integrated 14-bit DAC and supporting sample rates up to 1 GSPS. The AD9910 employs an advanced...
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AD9910 on Analog.com

Output voltage

Dorin12

on Feb 15, 2024

Category: Hardware

Product Number: AD9910

Hello! I have an AD9910 and I would like to configure it on Single Tone mode using SPI. When measuring the output, a DC voltage appears (instead of AC). On the oscilloscope i see this DC voltage somehow disturbed by another small signal that looks like an AM modulation.

0 Jules.Nikko

on Feb 19, 2024 1:52 AM
Hi Dorin12 ,

Apologies for the late response. Let me take a look at this and get back to you as soon as I can.

All the best,

Jules
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0 Dorin12
on Feb 19, 2024 2:53 AM in reply to Jules.Nikko
Thanks
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0 Dorin12
on Feb 19, 2024 2:54 AM in reply to Jules.Nikko
Look.
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0 Jules.Nikko

on Feb 20, 2024 8:16 PM in reply to Dorin12
Hi Dorin12 ,

May I know which output are you measuring from? What are your intended settings? System clock and output frequency value?

All the best,

Jules
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0 Jules.Nikko

on Feb 21, 2024 8:12 PM in reply to Jules.Nikko
Hi Dorin12 ,

It seems like the part was not configured correctly. It might be you have not configured the setting yet and the board has not communicated with it. Can you try to change output frequency if it changes?

All the best,

Jules
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0 Dorin12
on Feb 22, 2024 3:12 AM in reply to Jules.Nikko
Hello Jules,

I tryed to change output freq, but no change. Do you have some Information about how to program with SPI în Single Țone Mode? I use raspberry pi for programming and I designer my own PCB with AD9910
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0 Jules.Nikko

on Feb 22, 2024 3:33 AM in reply to Dorin12
Hi Dorin12 ,

I currently do not have the exact information to program your Raspberry Pi but hopefully this FAQ will help you get started.

All the best,

Jules
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