LTC2373-16 REFIN capacitor

Hi,

As I did not get any answer to my question from CIC EMEA so far Angry, I will try this way...

I use the LTC2373-16 ADC. In the datasheet it is written that the REFIN pin should be decoupled with a 100nF ceramic capacitor. But in the Eval Board schematic DC2071A there is a 4.7uF capacitor populated. I did the same on my board. Now I see that the piezo effect of this capacitor has quite an effect to the reference voltage. Can you please confirm that a 100nF capacitor is sufficient to decouple the REFIN pin.

Thanks and best regards,
Patrick