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Hello , I need a model file for NPN device, poly resistor and MIM capacitor for analog ic design. I am using LTSPICE and I need the model file for educational purpose only. Thanks.
Level 8 BJT models are HiCUM models (s. the PDF below) and aren't easily available for CMOS processes. And all the 0.25µm std. CMOS processes I know don't support models for npn BJTs, sorry! Perhaps somebody could help you, if you show how you'd layout this npn.Hello, I am using a 0.25um CMOS process (BSIM3) . The model file is level = 8.
From Cadence' device parameters' descriptions, usually just the model and geometry values are used.... how the spice models(and equations) (either for cmos or bjt) are linked with parameters description file in cadence?
The models are in the simulator's model library. The geometry values are selected by the user.... do you know where is it located?
You can find the exact calculations e.g. via the UC Berkeley's BSIM home page, but you probably won't be able to change them, as they are hard coded in the simulator. However, you can change any/all parameter(s) in the model files, or you may create your own models.I need to know the exact calculations and maybe modify them for my own PDK. I am not using a specific PDK but need to design and model my own PDK suitable for my technology.
You're right. The BJT models and equations can be found e.g. in this Avant's True-Hspice Device Models Reference Manual.... it focus on CMOS and doesn't include bipolar Gummel-Poon models.
Correct me if I am wrong. At least by looking at the documentation I cannot find it . any idea?