Parasatic resistor "rs" has been deleted becuase its value of 2.4375 mOhm (R/MFactor) was smaller than minr.

I want this parasatic ressistance to be included in my simulation. How can I set MFactor or R or minR with Spectre Simulator.

Do be careful about setting minr very low, because it can lead to convergence difficulties. See Ken's book http://www.designers-guide.org/Books/#Kundert-1995 page 24.

Regards,

Andrew.

I don't use ADE; I hope Andrew can help you with that.

You can also set minr on the model card for the device(s) you're concerned about -- eg, if you want to set minr for some very wide output devices but not necessarily for minimum-width devices.

Is the parasitic resistance of the device model or  being obtained from the
Parasitic extraction from the layout?

I believe minr only shows up in the "Resistance Options" section of the Setup->Options->Analog form if you're using an MMSIM version of spectre. However, it does seem to be supported in some IC5141 versions of spectre. You could always go to the bottom of the Analog options form and type in "minr=nnn" in the Additional Options field.

HOWEVER, the chances are that this won't work. Since local (model) minr is by default 0.1, setting it globally to something lower won't help - since it will already have been removed by virtue of the local minr.

Is it really going to make that much of a difference?

Regards,

Andrew.