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Original question:

ADS8363EVM: SPI measured analog value is frozen after some days

ADS8363EVM: About R11

Liu Yang
Expert 5945 points
Part Number: ADS8363EVM
Other Parts Discussed in Thread: ADS8363

Hi team,

Why is the Pin22(CLOCK) ADS8363 connected to R11?
Besides, should CMA and CMB be left open?


Beat Regards,
Tom Liu

  • 0
    TI__Guru**** 172656 points

    Hi Tom,

    R11 is there to dampen the SCLK rise/fall edge.  It's not always necessary to have such a termination resistor, but it does help with EMI issues in some cases.  CMA and CMB can be left open if you are using the internal common mode source.