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LTspice自带放大器模型 opamp2仿真报错

Category: Software
Software Version: LTSpice

 opamp2 是LTspice自带的库“OpAmps”中的器件 但是仿真仍然报错,请问是什么原因这是我的整体电路图

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  • Hi  ,

    The opamp2 in the library is universal opamp symbol with supply rails, we have another which is opamp but it does not have supply rails.

    Technically this is just a symbol that does not refer to…

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  • Hi  ,

    The opamp2 in the library is universal opamp symbol with supply rails, we have another which is opamp but it does not have supply rails.

    Technically this is just a symbol that does not refer to any model file, but you can use it if you do have a model file either with an extension of .lib or .sub. This is actually defined in the library when you click on the opamp2:

    I was able to run your simulation, but I used the LTC1001 model as this is included on the LTC.lib available in our library. I added a .inc LTC.lib to let LTspice know that I'm referring to the library file which contains multiple model definition, and then, I named the opamp2 as LT1001 to refer to that model which is inside the LTC.lib. You can select any of the models inside the LTC.lib which you can locate at the said path in the 1st screenshot above.

    Below is a screen shot of my simulation with your circuit using the LT1001 file:

     I'll attach the simulation file here for your reference as well.

    But, if you prefer to use a universal opamp in which you can define the different parameters of the said opamp you would most likely need to use the UniversalOpAmp on the library:

    With this, you can define the different parameters that you prefer the opamp might have.

    Each of the opamps there is a different level of parameters, you can select which you would prefer, as an example if you are going to use the UniversalOpAmp, then right click on the symbol, you would see the different parameters you can define:

    :) whichever you prefer.

    attached here is the simulation sample I've made using LT1001 model.

    OpAmp1.asc

    attached here the UniversalOpAmp guide we have on our educational library which you can use as reference in using the universalopamp symbols. 

    UniversalOpAmp.asc

    i hope this helps you understand more on how to use out universal opamp symbols in the library. 

    Best Regards,

    Earl

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  • Hi  ,

    The opamp2 in the library is universal opamp symbol with supply rails, we have another which is opamp but it does not have supply rails.

    Technically this is just a symbol that does not refer to any model file, but you can use it if you do have a model file either with an extension of .lib or .sub. This is actually defined in the library when you click on the opamp2:

    I was able to run your simulation, but I used the LTC1001 model as this is included on the LTC.lib available in our library. I added a .inc LTC.lib to let LTspice know that I'm referring to the library file which contains multiple model definition, and then, I named the opamp2 as LT1001 to refer to that model which is inside the LTC.lib. You can select any of the models inside the LTC.lib which you can locate at the said path in the 1st screenshot above.

    Below is a screen shot of my simulation with your circuit using the LT1001 file:

     I'll attach the simulation file here for your reference as well.

    But, if you prefer to use a universal opamp in which you can define the different parameters of the said opamp you would most likely need to use the UniversalOpAmp on the library:

    With this, you can define the different parameters that you prefer the opamp might have.

    Each of the opamps there is a different level of parameters, you can select which you would prefer, as an example if you are going to use the UniversalOpAmp, then right click on the symbol, you would see the different parameters you can define:

    :) whichever you prefer.

    attached here is the simulation sample I've made using LT1001 model.

    OpAmp1.asc

    attached here the UniversalOpAmp guide we have on our educational library which you can use as reference in using the universalopamp symbols. 

    UniversalOpAmp.asc

    i hope this helps you understand more on how to use out universal opamp symbols in the library. 

    Best Regards,

    Earl

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