mmaassel Post subject: Can I determine Vth for a MOSFET from a Curve
Tracer? Posted: Thu Feb 05, 2009 11:13 am Colonel
Joined: Mon Apr 10, 2006 12:43 pm Posts: 25 Good day. This
might be a very simple question but I am stuck. I have setup
a curve tracer simulation within SPICE (LTSPICE from Linear Technology).
I am just using the generic MOSFET model that comes with LTSPICE.
How can I determine the threshold voltage from the output of
the curve tracer? LTSPICE does allow me to export the data from
the curve tracer plot into a form that I can import into an Excel Spreadsheet.
Any suggestions and/or reference material would be greatly appreciated.
Michael Top IR Post subject: Re: Can I determine
Vth for a MOSFET from a Curve Tracer?Posted: Thu Feb 12, 2009 3:59 pm
Site Admin Joined: Mon Jun 27, 2005 2:02 pm Posts:
373 Location: Germany Hello Michael, I don't use this
kind of Spice. But in general I would say that for MOSFET (Depletion
or Enhancement), Vth is the point at which the current starts to ramp
up rapidly. Here is a picture to demonstrate: https://en.wikipedia.org/wiki/File:IvsV_mosfet.png
Hope this helps! _________________ Best regards,
- IR Top mmaassel Post subject: Re: Can I
determine Vth for a MOSFET from a Curve Tracer?Posted: Fri Feb 13, 2009
10:56 am Colonel Joined: Mon Apr 10, 2006 12:43 pm
Posts: 25 Good day IR. Thank you very much for the answer
and the link. Michael
Posted 11/12/2012
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