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AD9978 Power Supply

Question asked by Yvan on Jun 30, 2016
Latest reply on Jul 11, 2016 by TFAnalog

In the datasheet of AD9978, It’s said page 23:

"Note that the same 1.8 V supply must be used for all of the 1.8 V supply pins"

 

It means we are sharing the power supply for Analog and Digital Supply pins (AVDD1, AVDD2, AVDD3 and DVDD, LVDD).

 

What does It actually mean? I should use the same LDO but should/could I use a L-C filter to separate Analog from noisy Digital pins?

 

Same question for 3.3V supply.

 

Thanks!

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