Virtual Wafer Fab (VWF) and its Competitor
Synopsys Workbench

Virtual Wafer Fab (VWF) is software used for performing Design of Experiments (DOE), Optimization Experiments, and is a suitable replacement for Synopsys Workbench. Split-lots can be used in various pre-defined analysis methods. Split parameters can be defined for any of Silvaco's process, device, parasitic extraction and circuit simulators.

All simulations can be carried out in parallel either on a cluster of workstations or on a single SMP machine. VWF comes with a GUI, that also enables examination of experimental results.

VWF provides the following key features:

  • VWF can represent an entire flow from process simulation to spice circuit performance, or just part of the flow
  • Flexible system allows experiments to be defined where any mix of masks, process parameters, device parameters, circuit parameters or tuning coefficients can be defined as input variables
  • Experiments can be defined by varying the input parameters via a DOE such as Box Behnken, via an optimization algorithm like Levenberg-Marquardt or manually
  • Output responses of interest can be measured from the entire flow including process characteristics such as oxide thickness, device characteristics such as a threshold voltage, or circuit characteristics such as rise time
  • Each experimental variation can be run on a network of hosts to shorten simulation time
  • Response models can be generated over the experimental spread and then input parameters can be rubber banded to see the effect on output responses
  • A full worksheet of input and measured output responses can be exported to SPAYN for additional statistical analysis, or to TonyPlot for viewing purposes

Synopsys Workbench is the trademarks of its owner.