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Simulators >> Circuit Simulators >> Meaning of mac_device parameter 'Mismatch_Sigma'?
https://designers-guide.org/forum/YaBB.pl?num=1454962134

Message started by flyingRabbit on Feb 8^th, 2016, 12:08pm

Title: Meaning of mac_device parameter 'Mismatch_Sigma'?
Post by flyingRabbit on Feb 8^th, 2016, 12:08pm

Hi, all. Below picture is a basic test setup of monte-carlo simulation for the PDK that I'm currently using. In order to investigate mismatch characteristics, I'm using nch_lvt_mac devices that models mismatch characteristics of low-Vt NMOS.

Is there anyone who knows the accurate meaning of 'Mismatch_Sigma' parameter in the left 'Edit Object Properties' subwindow? I guess this is some sort of factor that is multiplied to the variance of mismatch parameter because when I put 3 as 'Mismatch_Sigma', the std becomes three times larger than the case when 'Mismatch_Sigma' is 1(default).