Hi <@U016EM8L91B> <@U01819B63HP> Can you please c...
# xschem
a
Hi @Tim Edwards @Stefan Schippers Can you please clarify to me why this difference between Xschem and MAGIC, please?
t
For one, the width of the 0p35 resistor should not have been allowed to be 0.69, or even editable in magic's parameter window. I'm not sure what happened there.
a
Thanks @Tim Edwards.I corrected it. However, the resistor's value in XSCHEM equals 37..68KOhms and the value of the same resistor in MAGIC reaches 38.226kOhms. Is there a reason for this difference? which one is correct, please?
t
The one in xschem is probably just the resistivity times the length divided by the width. The one in magic includes the endcap resistances.
1
a
Thanks I got it.
s
@Ahmed Reda the resistance value shown in xschem is just Rho * L / W as @Tim Edwards explained. The exact resistance is a complex equation that depends on the voltage difference and temperature (plus endcaps, also described by a complex equation).
1
a
@Stefan Schippers I got it. Thank you
t
So the xschem version is a "mostly accurate" value, the magic version is a "slightly more accurate value", and the only way to get a truly accurate value is through simulation, specifying all conditions.
1
a
@Tim Edwards @Stefan Schippers Really, thank you.