[Milsurplus] AD9850 DDS Freq. Syth Module

[Mark J. Blair]

On Mar 21, 2013, at 07:41 , David Stinson <arc5 at ix.netcom.com> wrote:
> Has anyone here actually used one of these DDS modules
> in a way that can be duplicated without
> renting a full-up surface-mount factory for a few hours?

SparkFun sells a breakout board for the AD9835 DDS chip that brings the interface signals out to 0.1" pitch through holes, for use by hobbyists: 

https://www.sparkfun.com/products/9169

Note that the board does not include any RF output filtering, so an off-board low-pass filter would need to be added for most practical applications. The I/O signals would typically be driven by a microcontroller board such as an Arduino, which is now carried by some Radio Shack stores (and available from SparkFun, of course).

I posted scope screen shots with and without an external low-pass filter in the discussion section under the product listing. I posted with username "NF6X".

I don't know if this would be usable for your application, but I'm throwing it out there as an option for experimenting with a DDS chip. Demo boards from Analog Devices tend to be expensive, and the official AD9850 demo boards date back to the era when PCs still had parallel printer ports and ran DOS.

-- 
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/