DEFCON in LT-SPICE?

[mukund]

What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit, or is it just that I am pushing LT-
SPICE?

Thanks,
Mukund

 

[Helmut Sennewald]

What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit,

Hello,

maybe yes.

At least LTspice has had a hard time to simulate your circuit.

or is it just that I am pushing LTSPICE?

Thanks,
Mukund

You should think about a better circcuit structure or more reasonable values
in your design. Using Nano-Ohms and Tera-ohms in one circuit
for example can lead to trouble. Also some of the vendor's opamp-models
are a nightmare for every SPICE-simulator.

Best regards,
Helmut

 

[Joerg]

Depends on which DEFCON level it was...

http://en.wikipedia.org/wiki/DEFCON

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