LTspice@groups.io

Hello,

I NEED THE AD8397 LTSPICE LIBRARY. CAN ANYONE HELP ME WITH THIS?

Canan.

On 30/10/2024 10:18, canann.ulger@... wrote:

I NEED THE AD8397 LTSPICE LIBRARY. CAN ANYONE HELP ME WITH THIS?

I guess you didn't try looking for it. It's already provided in LTspice. Just open the component chooser (F2) and type 8397. Up it pops.

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Regards,
Tony

#156188

I couldn't find it in the ltspice program installed on my computer??

#156189

Is your LTspice fully up to date? The current version is 24.0.12.

On 2024-10-30 09:28, canann.ulger@... wrote:

I couldn't find it in the ltspice program installed on my computer??

-- 
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying

Virus-free.www.avg.com

#156190

On 30/10/2024 10:28, canann.ulger@... wrote:

I couldn't find it in the ltspice program installed on my computer??

It was added in April, this year. Changelog:

04/17/24 AD8397 new model

If you not using LTspice version 24, you may not have received this update. If you haven't updated since before April, you won't have the AD8397. If you don't want to, or can't update LTspice, you can download an old AD8397 model from the ADI website.

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Regards,
Tony

#156191

Thanks, Mr Tony.

Best Regards.

#156192

Thanks, Mr John.

Best Regards.

#156193
Змінено

Off-topic, but a little funny: The NPN model inside the old (downloadable) AD8397 SPICE model has an ideal maximum forward Beta of 384614.384615385. And a Zener diode model has a breakdown voltage of 43.5423175545689.

Seriously? I wonder if anyone could see any difference if BF had been set to 384614.384615380, or 384614.000000000, maybe even 385000. It's one thing to throw in meaningless digits because they are 'free', but, um, people should be realistic. ADI made the model more than a dozen years ago. It's hard to blame them now.

The model uses the semi-standard pin order of +In -In Vcc Vee Out. Therefore, it can be used with LTspice's generic op-amp symbol "opamp2". Don't go making a new AutoGenerated symbol, which would be a bigger mistake than ADI's BF=384614.384615385.

Add the "opamp2" symbol to your schematic,
change the name next to it from "opamp2" to "AD8397",
and add the SPICE Directive ".lib AD8397.cir" to the schematic.
Keep the model file in the same folder with your schematic.

Andy