Hey guys,

I got a question concerning LTSpice.
-> How exact are the OPA modells? If i use for example Lt-insertnumber in a cirucuit will it show me the correct phase/gain over frequenzy? Or are the modells of lt extremely simplyfied. (-> i just get a "standart"-diagram instead of the one which is for example in the datasheet)

BR
Alex

 

If you use some ideal models, yes it is simplified, if you use the model of a particular opamp then it's pretty precise. Big companies provide spice models for their devices and you can expect them to behave as simulation shows.

 

Are you sure about this? Since i tried it once and got a completely different result as i could measure in reality.

 

Are you sure about this? Since i tried it once and got a completely different result as i could measure in reality.

In general, the specific op amp models should be a reasonably good match to most of the spec sheet parameters.

For what parameter(s) did you get a "completely different result"? To compare the parameters you must run the simulation with the same circuit they use for the data sheet values.