Open Issues: Difference between revisions
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==cdsdocs== | ==cdsdocs== | ||
Cadence documentation appears to be totally inaccessible at ISU! When trying to load the Cadence documentation with the command <code>cdsdoc</code> the following error message appears: | |||
<code></code> | |||
==AMI (ON Semi) 0.5u tech library inconsistency - temperature coefficient== | ==AMI (ON Semi) 0.5u tech library inconsistency - temperature coefficient== | ||
It has been observed that the BSIM3 parameter ''ute'' is assigned a value in the default tech library which does not match the [http://www.mosis.com//Technical/Testdata/ami-c5-prm.html| test data] available on the MOSIS website. The value in almost all of the test runs is -1.5 whereas the tech library value is -1.0. This parameter is the exponent that determines the temperature coefficient of the electron mobility; if you are working on temperature-critical designs or temperature-compensating a circuit, it is recommended that you copy the default tech library, <code>ami06.scs</code> from <code>/usr/local/cadence/iclocal/ncsu_local/models/spectre</code> to a local folder, make the modification, and carry out the new simulation with the new library. You can load it in your Analog Design Environemtn under Setup->Model Libraries. | It has been observed that the BSIM3 parameter ''ute'' is assigned a value in the default tech library which does not match the [http://www.mosis.com//Technical/Testdata/ami-c5-prm.html| test data] available on the MOSIS website. The value in almost all of the test runs is -1.5 whereas the tech library value is -1.0. This parameter is the exponent that determines the temperature coefficient of the electron mobility; if you are working on temperature-critical designs or temperature-compensating a circuit, it is recommended that you copy the default tech library, <code>ami06.scs</code> from <code>/usr/local/cadence/iclocal/ncsu_local/models/spectre</code> to a local folder, make the modification, and carry out the new simulation with the new library. You can load it in your Analog Design Environemtn under Setup->Model Libraries. | ||
Revision as of 19:56, 21 December 2009
cdsdocs
Cadence documentation appears to be totally inaccessible at ISU! When trying to load the Cadence documentation with the command cdsdoc the following error message appears:
AMI (ON Semi) 0.5u tech library inconsistency - temperature coefficient
It has been observed that the BSIM3 parameter ute is assigned a value in the default tech library which does not match the test data available on the MOSIS website. The value in almost all of the test runs is -1.5 whereas the tech library value is -1.0. This parameter is the exponent that determines the temperature coefficient of the electron mobility; if you are working on temperature-critical designs or temperature-compensating a circuit, it is recommended that you copy the default tech library, ami06.scs from /usr/local/cadence/iclocal/ncsu_local/models/spectre to a local folder, make the modification, and carry out the new simulation with the new library. You can load it in your Analog Design Environemtn under Setup->Model Libraries.