Differential Signal acquisition

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Differential Signal acquisition

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abderrahmanaitg
Contributor I

Hi NXP Community,

I have to perform the acquisition of a differential signal (AP-AN) coming form an OPAMP using S32K 100pin MCU.

Both signals AN & AP are in the range of VREFH and VREFL. What is the best option to connect them to the MCU and reach the best accuracy:

Option 1: Use 2 adjacent pins, standard channels from different ADC module ADC0 and ADC1 

Option 2: Use 2 adjacent pins, precision channels from the same ADC module ADC0 or ADC1

Thank you in advance for your support.

Regards,

Abderrahman

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