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Simulators >> Circuit Simulators >> Hspice **warning** parameter em < 5.0e5 invalid
https://designers-guide.org/forum/YaBB.pl?num=1248747139

Message started by qiushidaren on Jul 27^th, 2009, 7:12pm

Title: Hspice **warning** parameter em < 5.0e5 invalid
Post by qiushidaren on Jul 27^th, 2009, 7:12pm

Dear all,

When I was doing post sim by using Hspice, here is a warning as follow, do you know how to fix it, thank you in advance!

**warning** parameter em < 5.0e5 invalid
set defaults em = 4.1e7 to run

-Terry

Title: Re: Hspice **warning** parameter em < 5.0e5 invalid
Post by Geoffrey_Coram on Jul 28^th, 2009, 10:24am

EM is a BSIM3/BSIM4 parameter, and its default is 4.1e7, but the Berkeley code doesn't have any restrictions on its value -- if it's negative, the code skips a block in the 1/f noise evaluation.

If you're not doing noise analysis, I'd ignore it. If you are, I'd contact the vendor and ask why you're getting that message.

Title: Re: Hspice **warning** parameter em < 5.0e5 invalid
Post by qiushidaren on Jul 28^th, 2009, 10:57pm

Thank you Geoffrey_Coram, it really helps me a lot!