Hi,

I would like to program a DDS (AD9951).
The frequency tuning word (FTW) must be calculated to have a good frequency output (Fo).
Using also the frequency of DDS clock (Fs)
My DDS clock is 360MHz = 360^6

Fo = (FTW)(Fs)/2^32 (given by Analog device)

- As I want to send FTW to the DDS for 10MHz (Fo)
FTW = (2^32x10^6)/360^6 (this is true ?)

but I don't know how to calc these big numbers... (with long ?)
thanks for helping