INA131: Difference between INA131AP-1 and INA131AP

Hi Yohei-san,

ttd said:

What's the difference between INA131AP-1 and INA131AP?

Both parts come from the same Si-die design; and my guess is that part numbers are grade differently. Also, INA131BP is higher grade than INA131AP part. These are legacy ICs. I have to dig in further, if you want to know the differences.  

INA131AP-1 is obsolete, and INA131AP is available in TI E-store. The image below is the current inventory status. 

https://www.ti.com/product/INA131?login-check=true#order-quality

If you have additional questions, please let us know. 

Best,

Raymond

Hi Ryamond-san,

Thank you for your reply.

My customer is probably using INA131AP-1 from the Barbraun era, so they asked what is the difference between INA131AP and now INA131AP. maybe INA131AP => TI, INA131AP-1 => Barbraun.

I think red is INA131AP-1 and green is INA131AP specs comparison, and INA131AP has smaller offset voltage.

I wonder if the INA131AP has slightly better specs?

Best Regards,

ttd

There also existed an INA131AP-1G4, which looks like a TI name. So this is probably not from the Burr-Brown era.

The -1 suffix might indicate a change in the packaging, or in the electrical characteristics. In any case, the datasheet should mention it somewhere. Do you have the complete datasheet that contains this table?

Hi Yohei-san,

Sorry, I am unable to find INA131AP-1's datasheet or information in our database.

The image below is captured from digikey.com

https://www.digikey.in/en/products/detail/texas-instruments/INA131AP-1/1898490

Here is the information found in Rochester Electronics. 

https://rocelec.widen.net/view/pdf/1mtzey4gs1/TXIIS195527-1.pdf?t.download=true&u=5oefqw

Best,

Raymond

Hi Raymond-san,

Thanks for the Rochester data sheet. In the datasheet, there is no description for specification between AP and AP-1, I believe the specs were the same.

I couldn't see any clear difference between the two, but I think it would be a no problem to change from AP-1 to AP.

Best Regards,

ttd