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| Can I determine Vth for a MOSFET from a Curve Tracer? - RF Cafe Forums | ||||||
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Below are all of the forum threads, including all the responses to the original posts. 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: http://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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