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AD9781 power supply

Question asked by plkmn3 on Aug 12, 2013
Latest reply on Aug 26, 2013 by plkmn3

Hi, everyone;

 

We noted AD9781 has 4 power pins, named: CVDD18, DVDD18, DVDD33 and AVDD33. Do we need to deploy one LDO for each of them? To achieve the lowerest spur level, which one is most important? Which are the power supply ripple rejection specs for each of them?

 

Donald

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