Johan Euphrosine

I'm back from leave and should be able to make progress on this! Here is my plan based on the past discussions on this: - [x] Reproduce the plot from...

@RTimothyEdwards please have a look at https://github.com/google/skywater-pdk/issues/381#issuecomment-1237564571, the continuous models don't seems to fix the continuity issue reported in #381. Should we still move forward with the the remaining items...

@kgugala @PiotrZierhoffer found #143 #256 and #266 that all seem to contribute to fixing this, could you advise on the best way to merge them (rebase, apply in order, drop...

related #380

http://www2.hawaii.edu/~whitece6/posts/firstpost/ actually has a testbench + a notebook that reproduce the issue, we should test that the model in #380 actually fixes the glitch.

@hpretl trying to reproduce the testbench linked in http://www2.hawaii.edu/~whitece6/posts/firstpost/ with `ngspice` + the new models from #380 ``` nfet1V8 I-V curve .param mc_switch=0 .lib ../../ngspice/sky130.lib.spice tt * Gate bias X1...

Removing the `u` suffix from: ``` X1 vdn vgn 0 vbn sky130_fd_pr__nfet_01v8 w=10 l=0.15 ``` seems to workaround the error in https://github.com/google/skywater-pdk/issues/381#issuecomment-1236656126 but it doesn't seems that `ngspice` save anything...

tried to reproduce the plot in the original submission from @hpretl: https://github.com/google/skywater-pdk/issues/381#issue-1294635084 without much success. # sky130_fd_pr__nfet_01v8 ## binned ``` sky130_fd_pr__nfet_01v8 gm/id curve .param mc_switch=0 .lib ../../../conda-env/share/pdk/sky130A/libs.tech/ngspice/sky130.lib.spice tt * Gate...

@bmurmann yep, but I wanted to give @hpretl original test bench a try before :)

tried w/ the pfet as pointed by https://github.com/google/skywater-pdk/issues/381#issuecomment-1237314806 and http://www2.hawaii.edu/~whitece6/posts/firstpost/#testing-with-the-pmos and it doesn't seems that it fixes the glitch. # sky130_fd_pr__pfet_01v8 ## binned ``` sky130_fd_pr__pfet_01v8 gm/id binned models .param mc_switch=0...