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Regarding gpdk045 PDK and the SOI transistor simulation in cadence

Pasupathy KR

Dear All,

I have three queries :

1. The transistors that come in gpdk045 are bulk MOSFET  or SOI MOSFET?

2. Also what is meant by "inherited BULK" for eg. in this sentence "nmos1v_3 - 1.1 volt nominal Vt NMOS transistor with inherited BULK" . I saw this sentence in this doc :

Reference Manual
Generic 45nm
Salicide 1.0V/1.8V 1P 11M
Process Design Kit
and Rule Decks (PRD)
Revision 3.5
18/JULY/2011

3. Also I think BSIMSOI provided by BSIM group is for channel lengths more than 100nm only (since its equations are derived from BSIM3v3 ). So how to simulate SOI MOSFET in cadence for a nanoscale length say 45nm.

Kindly clarify.

Thanks and Regards,

Pasupathy K.R

Parents
  • Andrew Beckett

    There's no good reason to use a 4 year old version of the simulator, when trying to use a recent model. I know utsoi is there in later MMSIM11.1 ISRs, but since there have been 3 major releases of MMSIM since the version you're using (with another one coming in October), you should move to something more recent. This is going to be simpler (and faster) than trying to use a VerilogA implementation of the model.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    There's no good reason to use a 4 year old version of the simulator, when trying to use a recent model. I know utsoi is there in later MMSIM11.1 ISRs, but since there have been 3 major releases of MMSIM since the version you're using (with another one coming in October), you should move to something more recent. This is going to be simpler (and faster) than trying to use a VerilogA implementation of the model.

    Regards,

    Andrew.

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