Personally, I'd experiment with the AD9951 DDS chip, it's spurious
outputs are very low....

http://www.radioamatore.it/i0cg/add9951.html

However, if somebody wants a DDS for direct conversion experiments, the
AD9854 DDS has built in quadrature outputs which make it tempting. This
website discusses a complete design and, the kit can be gotten from Kanga.

It is pricy, but in my opinion, it has everything I would need.....

http://home.comcast.net/~aa0zz/index.html

The only drawback is that it's spurious outputs are higher.


Jim Pennell
N6BIU


--

10:59 Pacific Time Zone
Jun 2 2007

International Time
17:59 UTC
02.06.2007