Tanner EDA has added support for the PSP compact transistor model developed by Philips and Penn State University in the US to handle 65nm technology more accurately.

The PSP model, finished last April, has been added to Tanner’s T-Spice Pro Circuit Simulator programme for analogue and mixed-signal integrated circuit design.

PSP is intended to succeed the BSIM3 and BSIM4 models. It uses a surface potential-based model to derive one equation that describes the drift current, and another for the diffusion current.

Unlike the BSIM models, PSP does not use a mathematical smoothing function to model behaviour between sub-threshold and saturation. As a result it is more accurate when applied to analogue and RF circuits.

The support for BSIM3 in T-Spice Pro has also been improved, said the firm, with stress effect models added to provide more accuracy in smaller geometry processes.

www.tanner.com/eda