As for me, I'm using Tanner Tools for my design. There are a lot of good software that can be used for the desing purposes! This software is depends on your what system do you use, either UNIX or WINDOWS!
H-SPICE is the most accurate software for simulation. A good knowledge is very important to use the software. If you are familiar with any SPICE software, this will not a big problem as every SPICE software is like the same! The only different is their systax! So,please read the manual 1st befor you run a simulation. :lol:
i totally agree with them, i recently started to use it and turn out to be grat; however i have a cuetion, why the same circuit simulated in hspice and in pspice, with the same models, i have to change the adjustment to obtein the same result, and i`m talkin about the oposite, like increase or decrease the with of a nmos transistor?