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ADC128S022: ADC SPI inconsistencies

Gabriel Santos
Prodigy 10 points
Part Number: ADC128S022

Tool/software:

I have this ADC reading 8 analog inputs. The analog input is the same, but the data trasmited via SPI is not the same. 

This could be to irregularities in Analog Supply, Digital Supply, Ground Bounce? I have checked this three and they are consistent. 

Analog Supply and Digital Supply: 5V

Any tip?

Thanks in advance.

  • 0
    TI__Genius 15510 points

    Hi Gabriel,

    Can you share the data that you are expecting, and the data that you are reading back? What input voltage are you giving to the analog input channels? If you have a logic analyzer available to probe the SPI lines, it would also be useful to check the output data you are getting.

    Regards,
    Joel