Hints, Tips and Solutions

Q: Can ATLAS model the CV behavior of an MOS capacitor?

A: ATLAS/S-Pisces and ATLAS/Blaze both have a small signal ac analysis capability built into them. This analysis is based upon the work of S.Laux [1] and results in the extraction of the Y parameter matrix. These Y parameters contain the conductance and capacitance information for each electrode in the device. This information allows the user to examine the frequency behavior of the CV simulation and also other parameters such as interface fixed charge, doping , oxide thickness, etc.

Small signal analysis can be switched on by syntax found on the SOLVE statement. The user can simulate a bias ramp and perform a small signal analysis at one frequency using the syntax