Silly question - anyone know if there is a gf180mcu ngspice deck - we have been using spectre/hspice...

James Stine

11/29/2022, 3:03 PM

Silly question - anyone know if there is a gf180mcu ngspice deck - we have been using spectre/hspice but wondered if there were any who used it successfully for ngspice. We had some issues running with ngspice.

Amro Tork

11/29/2022, 4:20 PM

@James Stine Please tell me how can I help you with that. We have designed an entire PLL using ngspice.

Amro Tork

11/29/2022, 4:20 PM

including mixed mode simulations.

James Stine

11/29/2022, 4:22 PM

Just looking to use a ngspice deck for the model - right now we only see the spectre/hspice version and had issues running it with ngspice. We need the ngspice deck (i.e., for the models) for the CharLib characterization and didn't know if there exists an ngspice version somewhere. We tried modifying the current spectre/hspice one with no luck.

Amro Tork

11/29/2022, 4:24 PM

you mean like slides or the actual model card for the ngspice?

Amro Tork

11/29/2022, 4:28 PM

@James Stine Please take a look at: https://github.com/mabrains/globalfoundries-pdk-libs-gf180mcu_fd_pr/tree/main/models/ngspice/testing/regression/resistor_r

Amro Tork

11/29/2022, 4:28 PM

It has some python scripts and sample netlist.

James Stine

11/29/2022, 4:58 PM

hmm...I see the sm141064.ngspice but that looks like a resistor model. I need the ngspice models for NMOS/PMOS

James Stine

11/29/2022, 4:59 PM

I very appreciative of your help @Amro Tork

Amro Tork

11/29/2022, 5:05 PM

There are some samples for NMOS/PMOS in the same repo. I’ll get back to you in few hours

James Stine

11/29/2022, 7:44 PM

got it - super thx!

Amro Tork

11/29/2022, 9:09 PM

Take a look at that:

Amro Tork

11/29/2022, 9:09 PM

https://github.com/mabrains/globalfoundries-pdk-libs-gf180mcu_fd_pr/tree/main/models/ngspice/testing/regression/mos_iv_vgs

Amro Tork

11/29/2022, 9:09 PM

https://github.com/mabrains/globalfoundries-pdk-libs-gf180mcu_fd_pr/tree/main/models/ngspice/testing/regression/mos_iv_vbs

Amro Tork

11/29/2022, 9:09 PM

@James Stine I hope that helps.

Amro Tork

11/29/2022, 9:10 PM

Please note that mos scripts are not updated.

James Stine

11/29/2022, 9:23 PM

Yea thank you!!!

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