warning of Acde in Cadence Virtuoso

Anum,

This is not a SKILL question, so for future reference this is in the wrong forum (unfortunately due to a temporary bug I can't move it to the right place).

This is likely to be a model parameter, and from a quick hunt, I think it's for bsim4. Looking at the bsim4 help:

244 acde=1.0 m/V Exponential coefficient for charge thickness in CAPMOD=2 for accumulation and
    depletion regions.

I suspect it's a problem with your device models - I can't tell for certain without seeing it (you didn't say which spectre version you're using, because the versions I tried didn't give exactly that warning).

You might want to check with the foundry that supplied the models (and check with a recent MMSIM version).

Regards,

Andrew.

Dear Sir,

I am sorry for posting m question in a wrong forum. I will be careful for the next time.

The spectre version i am using is 11.1.0.214 and the technology is LFoundary 0.15um

Warning from spectre during initial setup.
WARNING (CMI-2419): M9.pmos1v8lvt: `imax' = 1 A is larger than `imelt' = 10.9 mA. `imelt' is increased to `imax'.
WARNING (CMI-2424): M9: `Acde' = 240.24e-03 is unusually small.
WARNING (CMI-2419): M10.pmos1v8hvt: `imax' = 1 A is larger than `imelt' = 10.9 mA. `imelt' is increased to `imax'.
WARNING (CMI-2424): M10: `Acde' = 240.24e-03 is unusually small.
WARNING (CMI-2419): McascP.pmos1v8hvt: `imax' = 1 A is larger than `imelt' = 10.9 mA. `imelt' is increased to `imax'.
WARNING (CMI-2424): McascP: `Acde' = 240.24e-03 is unusually small.
WARNING (CMI-2419): M8.pmos1v8hvt: `imax' = 1 A is larger than `imelt' = 10.9 mA. `imelt' is increased to `imax'.
WARNING (CMI-2424): M7: `Acde' = 240.24e-03 is unusually small.

Is there any solution for this?

Regards,

Anum Khan