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Question about ADN4620 refresh function

Category: Datasheet/Specs
Product Number: ADN4620

I would like to know the in-channel jitter when transmitting a non-return-to-zero (NRZ) signal without DC balance encoding.

According to the datasheet, when /REFRESH1 and /REFRESH2 are both low, the refresh function only becomes active if a data transition takes longer than 1us.

When the refresh function goes from active to inactive, does it introduce an additional propagation delay?