[time-nuts] ADF4001/4002 startup questions

[John Miles]

> Morning nuts-
> 
> I'm aware several of you use the ADF4002 for a simple small PLL in your
> radios.  Could any of you share some example bits or maybe even the code
> you use during startup?   I know what my latch values should be, but I
> don't seem to be getting them wrapped in the right control bits.

Here's a C implementation, suitable for Win32 and Arduino, for locking a 100 MHz OCXO to 10 MHz with an ADF4002:
http://www.ke5fx.com/adf4002_reflock.zip (1.4 MB)

You probably want to look at pllctrl.cpp. 

-- john, KE5FX
Miles Design LLC