PTM ported to Cadence® Spectre®, mainly intended as backend for AC²E.

Includes the following device models:

• 130nm: ./130/pdk/ptm.scs
• 90nm: ./090/pdk/ptm.scs
• 65nm: ./065/pdk/ptm.scs
• 45nm: ./045/pdk/ptm.scs
• 32nm: ./032/pdk/ptm.scs

The nfet and pfet sub-circuits add a statistical variation to the nmos and pmos models respectively.

The primitive devices may be characterized by adjusting the include statement in chr/ptm-<n|p>mos.scs or passing the include directory to spectre via the -I flag and running:

$ spectre -I./XXX/pdk ./chr/nmos.scs
$ spectre -I./XXX/pdk ./chr/pmos.scs

Alternatively, the script in ./src/char.pl can be used.

perl ./src/char.pl [--tech NODE] [--nmos] [--pmos]

If no NODE is specified, all node swill be used. If neither device type is specified, both will be used.

Example:

# Characterize everything.
$ perl ./src/char.pl 

# Characterize 90nm, 32nm and 130nm NMOS devices.
$ perl ./src/char.pl --tech 90 --tech 32 --tech 130 --nmos

Running the test script in ./src/test.pl should run through all technologies once and produce no errors. There should be spectre .log files in the ./src directory afterwards, corresponding to each test. These may give better insight as to what might be going wrong.

... under construction

Symmetrical Operational Amplifier with NMOS Differential-Pair. Utilize the SingleEndedOpampEnvironment in ACE for characterization.

Or run from the command line via

$ spectre -I./XXX/pdk ./XXX/op2/input.scs

Parameters and performances can be found in ./op2/properties.json.