Dds Ad9851

[mwhatley]

Anyone written the code to set up one of these DDS chips? I'm only looking for the proper sequence to set up the serial mode. I've tried what is shown in the data sheets without any luck.

[Joe Rocci]

Here's a link to a ham project that uses the '9851, including a 3-line basic stamp program (essentially the same as PBP):

http://www.amqrp.org/kits/dds60/DDS_60_Assy_Manual_v1.3.pdf

Look at page 11 of the manual.

Also, On analog Devices website page for the '9851, there's a "design assistant" that will give you the sequence of control bytes for any given set on configuration conditions.

Joe