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AD9689 maximum input voltage

I have a question related to the maximum input signal of AD9689. The question is somehow similar to and

In my application, I have signals that are normally within the 2V input scale, but sometimes, for some 10 or 20 ns, they reach up to 5V or 6V.

I understand that in those cases, the overrange bit will be set, and the output will be clipped, but I was wondering if the chip might get damaged because of this. Or is it not a problem if these 'spikes' happen not too often? Is there a way to calculate the occurrence frequency so that there is no risk of damage to the IC?

Thanks in advance for the help!

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