Compiler/LMV792: How to use LMV792 Enable pin

Hello Oleksii,

Thanks for your question and welcome to the forum.

Would you please try to re-attach your images to the post?  I cannot see them currently.  We do not support Multisim, as it is a National Instruments product.  However, I might be able to tell what is wrong from looking at the schematic images once you re-post the images.

Regards,

Daniel

Hi.



But how i wrote before, the same situation with your's software.
In docs the minimum sensitivity of current 100fA.
But with 50 nA i have the problems.

Thank you, for your attention.
Have a nice day.

Kind regards,
Oleksii

Hi Oleksii,

What is the difference between the circuits you used for simulation 18 and 19?  You have different results, but the same schematic.  I'm guessing you made some change(s) to the current source.

Could you send me your TINA file?  I think that would be the easiest way to fix this.

Also just to be clear, what is the exact problem here?  Is it that you cannot sense the 50nA current even though you are expecting to be able to measure smaller currents?  When you say "docs," are you referring to the datasheet?

Looking forward to your response and helping you solve this issue.

Regards,

Daniel

Hello Oleksii,

I have not heard back from you in a little while.  Please let me know whether you need more help or I will have to consider your issue to be resolved.

Regards,

Daniel