Warnings of simulation for the SPICE model

Hello

When you use a template PSpice of an OpAmp AD8001AR of Analog Devices for an implementation of active filter, the simulator of the APLAC Trans gives me warnings below;

Simulation - NLN:AD8001AR #2
11:34:47 GBJT. Q1: RB<= 0,="" rb="" set="" to="">
11:34:47 GBJT_PNP. Q2: RB<= 0,="" rb="" set="" to="">
11:34:47 GBJT. Q3: RB<= 0,="" rb="" set="" to="">
11:34:47 GBJT_PNP. Q4: RB<= 0,="" rb="" set="" to="">
11:34:47 VCVS. EOS_s1: | R2 | must be greater than the minimum series, using R2 = 1e-006 Ohm resistance instead
11:34:47 VCVS. EREF_s2: | R2 | must be greater than the minimum series, using R2 = 1e-006 Ohm resistance instead
11:34:47 VCVS. EREF_s1: | R2 | must be greater than the minimum series, using R2 = 1e-006 Ohm resistance instead
11:34:47 VCVS. ECM. R2 | must be greater than the minimum series, using R2 = 1e-006 Ohm resistance instead
11:34:47 CCCS. FSY_s2: | R1 | must be greater than the minimum series, using R1 = 1e-006 Ohm resistance instead
11:34:47 CCCS. FSY_s1: | R1 | must be greater than the minimum series, using R1 = 1e-006 Ohm resistance instead

Looks like the Simulator to change resistance values in the model values non-null which I'm not sure will affect the simulated result. Someone can tell me if I should be concerned or not?

Thank you very much in advance!

Without a doubt, test the model. I joined a project that can help.

While it is generally true that 1uOhm of resistance should not make a difference in a 'real' circuit, you're dealing with a behavioural model.  Modeling approach, the model may or may not be affected by small resistance added controlled sources.  A few branches inside these models can conduct current kA, amplify tensions 1000 x, etc..

If the file has the extension .cir (i.e. import as a netlist PSpice and translated to the old format of netlist AWR), try to change the extension .sp, then import it a model HSPICE.  If it works, it can behave better.  Please see this chapter in our documentation for more information on importing cards: https://awrcorp.com/download/faq/english/docs/Users_Guide/importing_netlists.html

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