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AMC130M03: 3 channel differential ADC

Nikhil Batra
Prodigy 30 points
Part Number: AMC130M03
Other Parts Discussed in Thread: ADS124S08, ISOW7741

Hii,

As mentioned in Datasheet AMC130M03 has 3 differential input channels.

But 2 of the ADC are sharing common Pin for Negative analog input.

Pin 7 (AIN12N)

I am receiving differential input from 3 different Temperature sensors (PT100- 4 Wire)  in my application. 

Can you please provide the Solution.

Thanks

Nikhil

  • 0
    TI__Mastermind 21115 points

    Hi Nikhil,

    as Eva mentioned on the other post, it might be more suitable to use an ADC which is better suited for RTD measurements and combine it with a digital isolator. ADS124S08 is usually an excellent fit for RTD measurements. You can refer to the following application note for a variety of circuit implementations: A Basic Guide to RTD Measurements

    TI offers also a portfolio of digital isolators with integrated isolated power generation. Something like the ISOW7741 for example. This could be paired with ADS124S08.

    Regards,
    Joachim Wuerker