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Very good advice. You can also, with advantage, do both; save in both locations, so that in 2027 you won't need to recall which? schematic directory the model is in. -- This email has been checked

Just in case it was not obvious already - Use LTspice's "opamp2" symbol with this model, after making the change to the model file. Change the name next to the symbol from "opamp2" to "OPA891". Also

Let us know if you encounter any problems with that model.? I did not try it yet. Andy

It is a SPICE model. TINA-TI can use either generic SPICE models, or models using their own format which only work in their program.? Fortunately, this one is a SPICE model.? ?In that respect,

TI is publishing the OPA891 model only for their TINA program. I understand there is a procedure to extract the TINA model information and make a LTSpice-compatible model. I also understand that the

I suppose that Rds depends on die temperature, too, so large signal Rds is a thicket, not a value. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

Even in the FET's linear region, it is nonlinear.? It is unlikely that a JFET or MOSFET has an Rds that is actually linear, in the so-called linear region.? It "bends", even there. But if you found

Either one.? They would be the same.? (But unlikely.) Andy

What will be the expression for RON then?

Not necessarily. If it is linear, then you know that the small-signal and large-signal definitions would be the same, so there would be no question. Andy

But RON is defined for linear region right?

It's impossible to say anything about your files or models, without seeing them. But I will say that you probably can separate the photodiode part of the model from the amplifier part of the model.?

Anything is possible if you know what you are doing. Why not post your files by uploading them to the \Temp folder. That way we are in a better position to help you. Best method is to combine the into

Hi I got a .CKT file and .lib file of photodiode and transimpedance amplifier. I know how to make spice model from these files. However, I want to separate transimpedance amplifier part from the .CKT

I finally saved a copy of the symbol in the local (“.”) folder, one of the two I now have access to. Sent: Thursday, December 19, 2024 2:29 PM To: [email protected] Subject: EXTERNAL: Re:

LTspice already supports environmental variables though the operating system calls it uses. Unfortunately, though, it doesn't

Beta, Betta, Bettastill. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

On 19/12/2024 22:29, Bell, Dave via groups.io wrote: > > Long explanation below, but here’s what I am trying to do: > > In a local folder where all my personal LTspice projects and libs reside, I

I think the Beta version was taken down a couple of weeks ago, probably while Analog Devices works out the bugs. I did not see any confirmation of that, but I think it is the most likely reason. I

You should use d(Vds)/d(Id) because it is a non-linear function. -- Regards, Tony