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ADC32RF55: Meaning of Code Error Rate

Kei Kuwahara
Expert 7630 points
Part Number: ADC32RF55

Hello team,

What is the meaning of code error rate (CER)?

Datasheet of ADC32RF55 states that it has CER = 10^-15.
But it is stated only on the first page, and there is no futher explaination.

My customer is assuming that this might be "sparkle codes", which are code errors not following the gaussian distribution.

https://www.analog.com/media/en/training-seminars/tutorials/MT-011.pdf

Does CER = 10^-15 means that there will be random error code (sparkle code) 1 in every 10^15 samples?

Best Regards,
Kei Kuwahara

  • +1
    TI__Mastermind 23750 points

    Hi Kei-san,

    Correct, CER refers to the probability of a 'bad' code. If a CER says 10^-15 (such as this device), then the probability of a bad code is 1/1015 on each sample. And thus it is expected that we will see 1 bad code only once per every 1015 samples, which at 3GSPS comes out to around a single bad code every 333,333 seconds (10^15 / (3*10^9)). This is roughly once every 92.5 hours, or 3.85 days of continuous runtime.

    Regards, Chase