If I remember correctly, effective channel width is the channel width after diffusion (it is not the same as the drawn channel width because diffusion 'blurs' the edges). It looks like you have a variable that is saying take your drawn channel width, add some amount for diffusion, that is your effective channel length - but that value is now less than or equal to 0.
Either set the diffusion variable to zero, or make your drawn channel length bigger. On Aug 17, 2013 5:31 PM, "Joaquin Cury" <biolyc...@gmail.com> wrote: > Hi, I am trying to simulate an operational amplifier. When I click in the > option "write spice deck", the Electric tells me: > > BSIM3: mosfet Mnmos-4@1, model nmos: Effective channel width <= 0 > > anyone know what that means ? > > Thanks > > Joaquin > > -- > You received this message because you are subscribed to the Google Groups > "Electric VLSI Editor" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to electricvlsi+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "Electric VLSI Editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to electricvlsi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
