https://open-source-silicon.dev logo
#analog-design
Title
# analog-design
d

diadatp

09/15/2020, 3:29 PM
Models seem to be working fine. Single ended ring oscillator works at around 7GHz at the TT corner. Does that seem reasonable?
j

Jon Pry

09/15/2020, 4:31 PM
For lowvt or standard?
d

diadatp

09/16/2020, 5:58 AM
Standard
a

Affan Abbasi

09/19/2020, 5:41 PM
@diadatp @Tim Edwards @Tim 'mithro' Ansell He \y guys I am having problem running trans sim...... Looks like the ngspice can't locate the binned models. I am using ngspice32. Any thoughts ???
Error on line 0 : m.xn1.msky130_fd_pr__nfet_01v8 out in 0 0 xn1:sky130_fd_pr__nfet_01v8__model l= 1.49999999999999994e-01 w= 4.60000000000000020e-01 ad= 0.00000000000000000e+00 as= 0.00000000000000000e+00 pd= 0.00000000000000000e+00 ps= 0.00000000000000000e+00 nrd= 0.00000000000000000e+00 nrs= 0.00000000000000000e+00 sa= 0.00000000000000000e+00 sb= 0.00000000000000000e+00 sd= 0.00000000000000000e+00 nf= 1.00000000000000000e+00 could not find a valid modelname Simulation interrupted due to error!
t

Tim Edwards

09/19/2020, 6:50 PM
@Affan Abbasi: Looking through the model bins of
sky130_fd_pr/cells/nfet_01v8/sky130_fd_pr__nfet_01v8.pm3.spice
, I see bins at W=0.42 and W = 0.55, but not at W = 0.46.
a

Affan Abbasi

09/20/2020, 2:40 AM
@Tim Edwards I see....! Thanks
2 Views