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ADS8688: ADS8688IDBT Application problems

Part Number: ADS8688

The TI ADS8688IDBT is used in our AGV project, and SPI reads abnormal data in the debug (data hopping on the falling edge of the clock).            If the reading data value is not correct,            Please confirm the problem.

  • Hi user6029042,

    Can you please explain the timing plot? I can see SCLK, what are other signals? What command are you sending to the ADC? The screenshot is too small to check, is your SCLK ~20kHz? It will be good to have a timing plot with SCLK,/CS,SDI and SDO together. Are you using internal or external voltage reference? is the voltage on REFIO and REFCAP correct? a schematic will be helpful.

    Thanks&regards,

    Dale