Pspice help! non linear current generator

[mkthom81]

Hello to everybody!

i’m designing a little circuit on Pspice with a Mosfet.

I need help because i need to put a current generator with this equation: (i’m trying to design a floating gate mos with tunneling effect given by Ifn):

Ifn= +- Atox*Afn*(Etox)^2exp(-Bfn/Etox)

where Etox=(Vd-Vfg)/dtox

dtox, Atox,Afn, bfn are known values.

I dont know how i can crate this current generator and how if its possibile put this equation.

help me!!!

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