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 What is EPSROX (Er: Gate Dielectric constant) in BSIM3v3? 

Last post Sat, Apr 26 2014 9:28 AM by Andrew Beckett. 1 replies.
Started by Alex Liao 11 Apr 2014 03:55 PM. Topic has 1 replies and 110 views
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  • Fri, Apr 11 2014 3:55 PM

    • Alex Liao
    • Top 200 Contributor
    • Joined on Wed, May 22 2013
    • Posts 37
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    What is EPSROX (Er: Gate Dielectric constant) in BSIM3v3? Reply
    Hi,

    I found Er = 3.9 in BSIM4.5 manual and used in calculation of Cox.
    But there is no information of Er in BSIM3v3 which is used in .18um technology.

    1. Is Er technology-independent which means it holds of the value 3.9 for all technologies?
    2. If there is no such parameter, Er, in old version, how do people calculate Cox (Coxp or Coxe)?

    Thanks,
    • Post Points: 20
  • Sat, Apr 26 2014 9:28 AM

    Re: What is EPSROX (Er: Gate Dielectric constant) in BSIM3v3? Reply

    bsim4 has "epsrox" which can be specified (and defaults to 3.9). As far as I can tell, older models have this built-in rather than having it as a parameter.  So you should assume 3.9.

    Regards,

    Andrew.

    • Post Points: 5
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Started by Alex Liao at 11 Apr 2014 03:55 PM. Topic has 1 replies.