ADS131E06: PT100/PT1000 (4-wire) input interface with ADS131E06IPAG

Hello Sadashiva,

Thank you for your post.

There are many devices in our portfolio that can be used to measure RTD sensors. Several of them integrate excitation currents and provide other useful features for ratiometric measurments and calibration. I suggest taking a look at some of the example circuits in the application notes and design guides below to start:

Cookbooks:

4-wire:

https://www.ti.com/lit/an/sbaa336a/sbaa336a.pdf

Other configurations:

https://www.ti.com/lit/an/sbaa334a/sbaa334a.pdf

https://www.ti.com/lit/an/sbaa310/sbaa310.pdf

https://www.ti.com/lit/an/sbaa330b/sbaa330b.pdf

https://www.ti.com/lit/an/sbaa329a/sbaa329a.pdf

RTD Design Guide:

https://www.ti.com/lit/an/sbaa275/sbaa275.pdf

 Best regards,

Thanks for details, This is useful..!

Can you suggest any PT100/PT1000 (4-wire) interface PGA amplifier without having integrated ADC in it?

I'm exploring alternate option to use controller's ADC port to connect PT100/PT1000 (4-wire) RTD

Hi Sadashiva,

That's really beyond the scope of the Data Converters forum. I suggest looking at devices under the PGA portfolio and ask for a recommendation on the appropriate forum.

www.ti.com/.../products.html

Regards,

Thanks, I will post question under PGA portfolio

1. Do you have any ADC recommendations (ADS131E06IPAG, ADS124S08 or any other new ADC) for PT100/PT1000 (4-wire) ?

Thanks Ryan for prompt response..!