Using Parameter Mapping Tables to Understand a Translation

Model parameter information is organized in tables with the ADS parameter, unit, and default value in the three left-hand columns of the table. The Spectre, Berkeley SPICE 2 & 3 (Spice2/3), PSpice and HSpice parameter translation information is described in the three right- hand columns. In some cases where ADS does not translate a particular SPICE dialect, the column for that SPICE dialect has been removed.

The parameters that are not translated are included in the tables. The parameters under Parameters not in Spectre Model are parameters that are supported in ADS and are not supported in Spectre. The parameters under Parameters not in ADS Model are parameters that are supported in Spectre and are not translated to ADS.

For each SPICE parameter in the Model Parameter table, the following conventions apply:

• An "x" indicates that the SPICE default value and units are the same as ADS. Any deviations are listed explicitly.

• A "-" indicates the parameter doesn't exist in that particular SPICE dialect.

• Extra parameter names listed are aliases and are converted to the proper name in ADS by the translator.

ADS Model Parameters that are not listed are not supported by any SPICE dialects and will use standard ADS defaults.

Refer to the Advanced Design System Circuit Components manual for an alphabetical listing of ADS supported models and a detailed description of their parameters and default values.