AD Direct Digital Synthesis Modules. The circuit is taken directly from the example in the AD datasheet. and uses a MHz clock and a 40MHz output. Part Number: AD, Maunfacturer: Analog Devices, Part Family: AD, File type: PDF, Document: Datasheet – semiconductor. Introduction. This module described here is based on ADS, a CMOS, MHz, and Complete DDS. Synthesizer. The AD is a highly integrated device.

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Hi Jeff, I used one to make a programmable frequency generator.

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Please Select a Region. To make the datawheet worse, I lost my old TekA scope also. Put a scope probe on the third pin. Just cut and paste, and upload to your Arduino board. Leave a Reply Cancel reply Your email address will not be published.

There is actually some math involved, bits, bytes, hexadecimal, longwords even. Temperature ranges may vary by model. I am using this as an oscillator in other radios. For me I need to modify the code to run exclusively between 35khz and 45khz.

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I will greatly appreciate if anyone can confirm or otherwise what I think is happening. Have you considered making this an audio sweep generator?

If not, then look for obvious stuff like no power, etc.

AD Direct Digital Synthesis Modules

There is no way, to get any other frequence as between 3. Hi NR8O thanks a lot for your code. Tweak here for accuracy.

I ended up modifying slightly an Arduino sketch that was written for theputting the AD on a UNO prototype shield, and testing it in single frequency mode. N8RO did an excellent job. Here is a post I made about it and another toy I got.

The adjustment of the blue pot is very delicate. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

A general description, including details of the simple API and physical hook-up, appears on my blog: I have it transmitting using this method so far and very impressed with this inexpensive module. I am new to this forum. Price Rohs Orders from Analog Devices. I have two of these boards and cannot datasheeet either of them to work.

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AD Datasheet pdf – CMOS, MHz Complete DDS Synthesizer – Analog Devices

Hi, if you want to take into account the phase between you can substitute the line: Anyone out there have any problems getting these boards to work? The smallest step-rate I can use is 1 Hz. Thanks for posting your frequency programming sketch. Your email address will not be published.

Phase Modulation Capability 3. Model The model number is a specific version of a generic that can be purchased or sampled.

Testing an eBay AD9850 DDS module with Arduino Uno

The product is appropriate for new designs but newer alternatives datashset exist. This is the date Analog Devices, Inc. I have exact the same one here. Thanks for posting your experience and your code.