Summary

SCNAP4 is high performance software for the analysis of general linear networks, especially ideal and non-ideal switched capacitor and switched-current circuits in both time and frequency domain. It also provides full non-ideal sensitivity analysis and noise analysis with a unified data structure and modularised program structure.

The pre-processing of large amounts of frequency-independent material reduces computation costs while interpretable code generation, polynomial approximation of excitation, descretization of the whole system and Hessenburg techniques are fully exploited.

SCNAP4 currently features:

Efficient analysis of very large periodically switched networks (SC, SI and CT) - including +/-R, +/-L, +/-C.

• Time domain
• Frequency domain
• All linear non-idealities ( Rsw, GB, Rin, Rout )
• Continuous and S/H signals
• Multi-rate clocks and many nodes

Sensitivity analysis

• w.r.t. all components ( R,C, Rsw, GB, Rin, Rout, Gm,... )
• individual and global sensitivities

Noise analysis

• SC and SI circuits - baseband and full ailaising
• CT full frequency range

Accuracy and efficiency

• Pre-processing of frequency independent sections
• Interpretable code generation
• Hessenburg techniques
• Sparse matrix techniques
• Semi-symbolic version available

Applications

• True mixed mode analysis
• Circuit optimisation

Availability

We can supply versions of SCNAP4 for the following:

SCNAP4 can be supplied on CD or floppy disk and comes complete with a suite of examples and a User Guide. Contact sewell@elec.gla.ac.uk for further information.

Analog Design Software the University Library archive

Download tutorial guide (user manual) from the University Library archive SCNAP4 user's guide

The software is available under licence from the University - contact Stuart McKissock
at S.mckissock@enterprise.gla.ac.uk for licensing details.