ADE7878 - Symptoms of crystal circuit issues

What symptoms would be observed if the crystal in an ADE7878 circuit is not performing adequately. Would poor crystal performance affect SPI communication, proper initialization, measurement accuracy, etc?

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  • 0
    •  Analog Employees 
    on Mar 31, 2019 11:50 PM

    HI Captain,

    You you are correct, especially this clock is being used the the ADC in sampling, so your codes will be inaccurate so the metrology measurements would have a higher percent error than the usual. I recommend using crystals with the following attributes:
    - temp operating: -40 to 85 deg C.
    - Frequency tolerance: |50 ppm| or less.
    - Frequency stability: |30 ppm |or less.

Reply
  • 0
    •  Analog Employees 
    on Mar 31, 2019 11:50 PM

    HI Captain,

    You you are correct, especially this clock is being used the the ADC in sampling, so your codes will be inaccurate so the metrology measurements would have a higher percent error than the usual. I recommend using crystals with the following attributes:
    - temp operating: -40 to 85 deg C.
    - Frequency tolerance: |50 ppm| or less.
    - Frequency stability: |30 ppm |or less.

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