Hello, can someone please help me find any documen...
# sky130
m
Hello, can someone please help me find any documentation that tells me the min and max W,L for each device in the pdk?
a
best way to find out is look into spice files
m
@Arman Avetisyan can you please tell me where exactly are the spice files and how could i read them?
s
you can get a lmax-lmin-wmax-wmin list with:
grep -H 'lmin' /path/to/share/pdk/sky130A/libs.ref/sky130_fd_pr/spice/*fet*_tt.pm3.spice
for every transistor you get a number of lines with a valid lmin-lmax-wmin-wmax range
m
@Stefan Schippers I applied this line of code but i got nothing as you can see in the attached picture
s
rf transistors do not have ranges of L and W, these are fixed layout devices. You have only one L and one W. If you look into this file there are lot of subcircuits like this:
Copy code
.subckt  sky130_fd_pr__rf_nfet_01v8_lvt_aF02W0p84L0p15 d g s b
...
From above device name you get W=0.84 x 2 fingers (nf) and L=0.15
m
@Stefan Schippers How can i read .spice files?
s
open this file with a text editor. These are plain ASCII (text) files.
m
@Stefan Schippers thank you so much
👍 1