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ADC128S022: Accuracy error in multi-channel ADC read

Maicon Machado
Prodigy 20 points
Part Number: ADC128S022

I'm using the ADC128S022CIMT to monitor 8 different analog sensors. The current algorithm reads all channels every 100 ms. When reading all channels, the measurement shows an accuracy error of around 100 mV. However, if I read only one channel, the reading is accurate.

  • 0
    TI__Genius 14270 points

    Hi Maicon,

    Could you clarify what the algorithm is doing a little more in depth? Is it reading all channels all at once every 100 ms or cycling through them? 

    Could I also see a schematic of your design to help get a clearer understanding?

    Best,
    Joel