The trick to using sub circuits from third parties in LT Spice is "brute
force". You simply include the full text of the subcircuit in the LTspice
simulation. It shows up as a test anotation in the schematic but.
Trying to integrate it into the existing library takes more work, but
direct inclus
LTSpice has a schematic capture and graphical output viewer associated
with it. It is my suggestion. Using macro models from other vendors
takes a bit of work. Using LTC parts is a snap. ;-)
I prefer running a more traditional spice for noise analysis. Check out
NGspice
http://ngspice.sourcef
Electronic Design recently ran an article discussing the various free
SPICE and other circuit simulators available for download. LTspice
which I have seen several list members use is prominently mentioned.
For those who missed it, here is a link to the online article:
http://electronicdesign.com
