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#

7. Simulation Results

On the following pages simulation results for typical digital and analog
circuits will be presented. These circuits have been selected to demonstrate
typical problems occurring during mixed-mode device simulation. Most of these
problems are related to high bias voltages and mutually coupled devices. For
circuits containing only one distributed device, normally no convergence
problems are encountered compared to simulations of the same device in
single-mode. Except for the last circuit (A709 OpAmp), operating points could
be easily found using the new shunt conductance technique as described in
Section 6.2.5. However, to obtain a solution for HD and
self-heating simulations iteration schemes had to be used to successively
refine the solution starting from an initial DD solution.

*Tibor Grasser *

1999-05-31