#272 Cut&Paste error in statistical parameter file Issue created by dwarning Looking into file IHP-Open-PDK/ihp-sg13g2/libs.tech/ngspice/models/cornerMOSlv.lib we see in typical (tt) section (abbreviated for better readability):

LIB mos_tt  
param sg13g2_lv_nmos_vfbo_mm= 1.0  
param sg13g2_lv_nmos_ctl = 1.2080  
param sg13g2_lv_nmos_rsw1 = 0.7200  
param sg13g2_lv_nmos_muew = 0.8500  
param sg13g2_lv_nmos_dphibo = 0.9915  
param sg13g2_lv_nmos_dphibl = 0.9693

param sg13g2_lv_pmos_vfbo_mm= 1.0  
param sg13g2_lv_pmos_ctl = 1.9570  
param sg13g2_lv_pmos_rsw1 = 0.7720  
param sg13g2_lv_pmos_muew = 1.0520  
param sg13g2_lv_pmos_dphibo = 0.9050  
param sg13g2_lv_pmos_dphibl = 0.8550

include sg13g2_moslv_mod.lib  
ENDL mos_tt

So we see that we have different parameters (act as factor) for nmos and pmos. Next section is for statistical simulation in typical corner:

LIB mos_tt_stat  
param sg13g2_lv_nmos_vfbo_mm_norm= 1.0  
param sg13g2_lv_nmos_ctl_norm = 1.2080  
param sg13g2_lv_nmos_rsw1_norm = 0.7200  
param sg13g2_lv_nmos_muew_norm = 0.8500  
param sg13g2_lv_nmos_dphibo_norm = 0.9915  
param sg13g2_lv_nmos_dphibl_norm = 0.9693

param sg13g2_lv_pmos_vfbo_mm_norm= 1.0  
param sg13g2_lv_pmos_ctl_norm = 1.2080  
param sg13g2_lv_pmos_rsw1_norm = 0.7200  
param sg13g2_lv_pmos_muew_norm = 0.8500  
param sg13g2_lv_pmos_dphibo_norm = 0.9915  
param sg13g2_lv_pmos_dphibl_norm = 0.9693

include sg13g2_moslv_stat.lib  
include sg13g2_moslv_mod.lib  
ENDL mos_tt_stat

The problem is that the nmos parameter are taken over from tt section into the stat section - but pmos not. They are a simple copy of the nmos parameter. Looks like a cut and paste error and follows in wrong results for tt_stat pmos simulations. Other sections in lv and hv Corner lib have not this bug. BTW - I see no need to create additional parameter for statistical simulation with _norm in the end of name. Just using the tt, ff, ss parameter is sufficient. @miesli : In case you are still there, can you comment please. IHP-GmbH/IHP-Open-PDK