SPAYN: Golden Device Search Algorithm, EKV MOSFET Model and Improved GUI

Introduction

The addition of important features in the latest version of SPAYN (1.7.3.R) makes it an even more useful and versatile statistical parameter and yield analysis tool. The list of spice models available in SPAYN has been expanded to include the EKV MOSFET model. The new “Golden Device” function locates the observation in a particular database that is closest to the theoretical mean observation. This “Golden Device” is then considered to be the average observation that best characterizes that database. Several new plotting symbols have been added to the scattergram plotting facility allowing a clearer graphical representation of data. It is also now possible to locate the position of the minimum or maximum record in a given database without the need to manually sort through the complete data set.

EKV MOSFET model

The EKV MOSFET model has been added to the list of device levels currently available in SPAYN . An EKV SPICE model (level = 44) can be set up by selecting Setup–>Spice–>Edit Models from the main SPAYN window and then entering 44 for the model level. The other parameters are also selected accordingly (see [1] for more details).