Package: pygmid
pygmidA python3 implementation of the gm/ID starter kitReport bug·Request featureTable of contentsAboutInstallationUsageAuthorsAboutpygmid is a Python 3 version of the gm/ID starter kit by Prof. Boris Murmann
of Stanford University. The package also offers some scripts from the Paul Jesper's book.If you find this package useful for your research, please consider citing it.For the gm/ID starter kit, written for MATLAB, please refer to the 'Links'
section at Prof. Murmann's website:https://web.stanford.edu/~murmann.InstallationTo install pygmid from source, download from Github and run pip:pip install .in the root directory.pygmid can also be installed from PyPI:pip install pygmidUsageScripting with the Lookup ClassA gm/ID lookup object can be generated with theLookupclass. The lookup object requires lookup data for initialisation. Both.matfiles generated using MATLAB or.pklfiles generated using pygmid's own characterisation script are supported.You can create a lookup object as follows:frompygmidimportLookupaslkNCH=lk('180nch.mat')Access MOS DataTheLookupclass allows for pseudo array access of the MOS matrix data. You can access data as follows:# get VGS data as array from NCHVGS_array=NCH['VGS']Data is returned as a deep copy of the array contained in theLookupobject.Lookup functionalityLookup of interpolated data occurs as follows:VDSs=NCH['VDS']VGSs=np.arange(0.4,0.6,0.05)# Plot ID versus VDSID=NCH.look_up('ID',vds=VDSs,vgs=VGSs)# alias function lookup can also be usedID=NCH.lookup('ID',vds=VDSs,vgs=VGSs)# check biasVGS=NCH.look_upVGS(GM_ID=10,VDS=0.6,VSB=0.1,L=0.18)print(f'VGS is:{VGS}')plt.plot(VDSs,np.transpose(ID))Modes 1 (Simple parameter lookup), mode 2 (arbitrary ratio lookup) and mode 3 (cross lookup of ratios) are implemented. The companion lookupVGS function is also included.Technology Extraction FunctionsThe EKV extraction function can be used as follows:frompygmidimportEKV_param_extraction,XTRACT(VDS,n,VT,JS,d1n,d1VT,d1logJS,d2n,d2VT,d2logJS)\=EKV_param_extraction(NCH,1,L=0.18,VDS=0.6,VSB=0.0)Sample usage of this and other utility functions can be found indebug_utility.py.ExamplesUsage of lookup scripts are given indebug_lookup.pyanddebug_lookupVGS.py.Sample outputs for the 180nm generic pdk used in the Murmann starter pack are given below:The generic PDK data is hostedhere.Sweeping a Technologypygmidalso features a CLI which can be used to run techweeps to generate transistor data.Documentation will be added in due course. This functionality is in a state of flux.AuthorsCian O'Donnell :cian.odonnell@mcci.ieTiarnach Ó Riada :tiarnach.oriada@tyndall.ieDanylo GalachContributorsJosé Rui CustódioA special thanks to Prof. Boris Murmann for giving permission to use his work and release this package under the Apache 2.0 License.Apache License
                       Version 2.0, January 2004
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