Attaching new SPICE model

[mosfet50]

I'm trying to attach a model but my simulator is not seeing it.

[mosfet50]

the rest of the attachments

Thanks for your time and help,
Rob

[Ettore]

The settings you've posted look correct.
I believe the string "; REF 6/2/93" to the end of .SUBCKT line is the problem. SPICE3F5 won't recognize it as a comment.
You should delete it or add it to a new empty line by using the syntax like that: * REV 6/2/93

Just a quick note about the model; if it is that reported in the FAIRCHILD's datasheet then you should be aware that it is a PSPICE model so it might get some convergence issues because, possibly, to the VSWITCH models.

[mosfet50]

The settings you've posted look correct.
I believe the string "; REF 6/2/93" to the end of .SUBCKT line is the problem. SPICE3F5 won't recognize it as a comment.
You should delete it or add it to a new empty line by using the syntax like that: * REV 6/2/93

Just a quick note about the model; if it is that reported in the FAIRCHILD's datasheet then you should be aware that it is a PSPICE model so it might get some convergence issues because, possibly, to the VSWITCH models.

That didn't fix it.
A small note, I think there's an error in the help, should this read "SPICEFILE" AND NOT "SPICEMODEL"?

[David]

Hi,

I believe for Primitive you should have analog,subckt and not analog.subckt i.e. comma and not full stop.

Regards,
Dave.

[mosfet50]

Thanks David that worked. How accurate the SPICE is I'll have to see.

[mike3563]

Hello!

I ask for help for a very similar problem. I need to simulate an OpAmp which is not in the standard libraries.

I found the ECAD file at https://componentsearchengine.com/searc ... rm=LTC6400 and imported to Proteus. Obviously, this package does not include the SPICE instructions that are stored in a separate file and are of the following type:

Code: Select all

* Pinout (same as IC): IN- VOCM V+ OUT+ OUT- V- EN/ IN+ -OUTF +OUTF
.SUBCKT LTC6400-26 1 2 3 4 5 6 7 8 9 10
CG1P 26 0 0.4E-9
CG3P 28 0 20E-12
CG5M 25 0 10E-12
CG5P 24 0 10E-12
*CIN2 3 8a 1p
*CIN3 1a 3 1p
*CIN4 6 8a 1p
*CIN5 1a 6 1p
COCM1 61 0 70p
COCM3 6 2 4E-12
CPSRR1 53 3 4e-14
CPSRR2 54 6 4e-14

I saved these instructions in TXT format in the "Models" folder, however the simulation does not work as the simulation has no output signal. Furthermore, the Spice model is not found in the library. I might assume that the Spice instructions I have are not compatible with Proteus. What do you think?

[mosfet50]

Hello!

I ask for help for a very similar problem. I need to simulate an OpAmp which is not in the standard libraries.

I found the ECAD file at https://componentsearchengine.com/searc ... rm=LTC6400 and imported to Proteus. Obviously, this package does not include the SPICE instructions that are stored in a separate file and are of the following type:

Code: Select all

* Pinout (same as IC): IN- VOCM V+ OUT+ OUT- V- EN/ IN+ -OUTF +OUTF
.SUBCKT LTC6400-26 1 2 3 4 5 6 7 8 9 10
CG1P 26 0 0.4E-9
CG3P 28 0 20E-12
CG5M 25 0 10E-12
CG5P 24 0 10E-12
*CIN2 3 8a 1p
*CIN3 1a 3 1p
*CIN4 6 8a 1p
*CIN5 1a 6 1p
COCM1 61 0 70p
COCM3 6 2 4E-12
CPSRR1 53 3 4e-14
CPSRR2 54 6 4e-14

I saved these instructions in TXT format in the "Models" folder, however the simulation does not work as the simulation has no output signal. Furthermore, the Spice model is not found in the library. I might assume that the Spice instructions I have are not compatible with Proteus. What do you think?

There's no SPICEMODEL default value listed, it should read "LTC6400-26".

[Ettore]

Hello!

I ask for help for a very similar problem. I need to simulate an OpAmp which is not in the standard libraries.

I found the ECAD file at https://componentsearchengine.com/searc ... rm=LTC6400 and imported to Proteus. Obviously, this package does not include the SPICE instructions that are stored in a separate file and are of the following type:

Code: Select all

* Pinout (same as IC): IN- VOCM V+ OUT+ OUT- V- EN/ IN+ -OUTF +OUTF
.SUBCKT LTC6400-26 1 2 3 4 5 6 7 8 9 10
CG1P 26 0 0.4E-9
CG3P 28 0 20E-12
CG5M 25 0 10E-12
CG5P 24 0 10E-12
*CIN2 3 8a 1p
*CIN3 1a 3 1p
*CIN4 6 8a 1p
*CIN5 1a 6 1p
COCM1 61 0 70p
COCM3 6 2 4E-12
CPSRR1 53 3 4e-14
CPSRR2 54 6 4e-14

I saved these instructions in TXT format in the "Models" folder, however the simulation does not work as the simulation has no output signal. Furthermore, the Spice model is not found in the library. I might assume that the Spice instructions I have are not compatible with Proteus. What do you think?

Just out of curiosity, where did you find that SPICE file from ?
However, in order to check SPICE compatibility you should attach the entire SPICE model file.

[mike3563]

It is part of a library that I found some time ago I think in a forum but I do not know its origin. Maybe extracted from some other Spice program. It is not produced by me. But maybe it's not compatible.

[Ettore]

...But maybe it's not compatible.

You never know...
LTC6400-20, LTC6400-26 and LTC6401-8, LTC6401-20, LTC6401-26 parts and related simulation support will be added to 8.12 release.

[mike3563]

Hi,It is more than good news that they will be included in the next version. Will they possibly also be simulated in the demo version? In the meanwhile i had to do some research because I could no longer find those data. However, I also found them on LTSpice which provides the .asy file and a .LIB file contained in the sub folder which also contains the data relating to the OpAmp above . I would like to know if they are usable in any way. However, the file and the data contained are the property of Linear with relative Copyright. Can I publish it anyway?

[David]

Hi Mike,

You will be able to simulate them in the Demo, however you will not be able to save the design.

You will need to contact Linear about publishing their copywrited material.

Regards,
Dave.

[Ettore]

... However, the file and the data contained are the property of Linear with relative Copyright. Can I publish it anyway?

Don't waste your time as the new model included in the latest LTSpice release is not translatable to Proteus. You need to wait Proteus 8.12.

[mike3563]

Yes, I actually use the demo to simulate small circuit and I'm glad they will be included in the demo. Thanks to all for the answers I await 8.12 to take a peek !.