I just finished installing and using ADIsimPLL_V3_40_06_setup.zip. Seems like a very intuitive and helpful program, but it crashed when I tried to go back and specify a phase noise for the reference oscillator. In fact, I didn't get as far as specifying a phase noise. I was re-entering the ref. osc parameters (100MHz TCVCXO disciplined by 10MHz TCXO). Couldn't find what I needed in the library; chose custom 100MHz. When I hit Next, BOOM! I attached the design I was working on (as well as I can remember anyway).
There are several control options ADIsimPLL V3.40 doesn't seem to provide.
For example, phase resync is very important to me, so I need to make sure the feedback loop sees the divided VCO output.
I also want to use both outputs. (btw, what kind of isolation can I expect?)
All of this came about because in the course of making phase resync work, I had to change feedback divider to match divided VCO output. This required changing the MOD from 500 to 2000, and that probably changed my loop parameters. Since I did not do the original design, I'm not all that sure what I am doing.
Finally, I believe there may be an error on the datasheet for the figure showing direct IQ modulator example. Looks like you may have LO and Q lines reversed?