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DS125DF410: About power noise

Part Number: DS125DF410

Hello, I'm Hojae Lee.

I wonder the power noise specification.

According to datasheet, 

50Hz to 100Hz - 100mVp-p

100Hz to 10MHz - 40mVp-p

10MHz to 5.0GHz - 10mVp-p

but normaly  I measure the power noise to 20MHz using osilloscope bandwidth limite

Please let me know which specification I will follow.

Thank you.