Schematic on LT Spice
You can import other vendors' SPICE model files into LTSpice. If the other vendor (you mention an Analog Devices part number) provides a Spice model, you can add that to your LTSpice library and create your own custom symbol for it. Then you can add it to your simulation schematic.

Wurth Elektronics has a really nice hardbound book titled "The LTSpice Simulator", ISBN 978-3-89929-258-9. There are other online references for LTSpice as well.