LTSpice Help

[Amar Dhore]

Hello Everyone,

I am new to the ltspice.
I am trying to import a third party OPAMP (MCP6L04) into ltspice. I download the spice model and added in the SPICE directories.

When I compile it, I am getting an error: "Analysis: Time steps too small; initial timepoint:trouble with node u1:21"

I have attached a .asc file. I would appreciate any help. Thanks.

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Amar

 

[Arouse1973]

Just tried it and it works for me. The OPAMP comes in as an OP37 not a MCP6L04?
Adam

 

[Amar Dhore]

I updated the file. Sorry about that, I forgot to save the changes.

 

[Arouse1973]

Ok let me look.

 

[Arouse1973]

I don't know how good the model is. I got it to work by adding some series resistance to the power and signal sources. Also add the .options functions on the image I have posted.
Adam

 

[Amar Dhore]

Yaaay, it works.Thanks Adam. I am curious to know, How did you figure it out?

 

[Arouse1973]

You may find it works without the gmin options but I seemed to get a faster response by adding this. The other option can solve time-step too small issues by adding a very small delay to all the nodes. I have used this a few times before and it has helped.
Adam

 

[Amar Dhore]

Good to know. I will keep it in mind. Thanks again.
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Amar