Ripple Noise of LTM8055 DC2017A

Hi

Regarding LTM8055 data sheet, I can see the output ripple noise is very low as follows.

However our customer measured the noise on the demo board DC2017A as follows. The ripple noise is 588mVp-p at Vout=12V, Iout=1.2A.

Off course the probe setting is as follows.

I think that the measurement setting might be different between ADI and the customer.  

Could you please let me know the detail of the measurement setting on ADI side ?

Regards,

Hiroyuki