#315 mismatch simulations no longer work New issue created by StefanSchippers After an open_pdks update most pm3 fet model files no longer have the gauss() functions for simulating montecarlo/mismatch. For example, expression for vth0 for a nfet_01v8 transistor (

.../share/pdk/sky130A/libs.ref/sky130_fd_pr/spice/sky130_fd_pr__nfet_01v8__tt.pm3.spice

):

+ vth0 = {0.5190093+sky130_fd_pr__nfet_01v8__vth0_slope_spectre*(sky130_fd_pr__nfet_01v8__vth0_slope/sqrt(l*w*mult))}

while expected expression should be like in the expression for `sky130_fd_pr__nfet_01v8__tt_leak.pm3`:

+ vth0 = {0.536077+MC_MM_SWITCH*AGAUSS(0,1.0,1)*(sky130_fd_pr__nfet_01v8__vth0_slope/sqrt(l*w*mult))}

RTimothyEdwards/open_pdks