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LMK04828BEVM: frequency spectrum irregular

Part Number: LMK04828BEVM

we bought 3pcs LMK04828BEVM August 7, 2019  from mouser.

the frequency spectrum is irregular when the crossover frequency @125M。 two evm boards are the same problem。like the picture as follow.

please help to confirm what's wrong?and we need replace the two boards.thanks!