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AD9528 supply rejection

Question asked by AVT1 on Dec 17, 2015
Latest reply on Jan 26, 2016 by pkern

We are using the AD9528 in a new design. We are concerned with power supply noise degrading the jitter performance. The data sheets states on pg 25 that each power supply input has a dedicated internal LDO. Can you give any guidance on how much 3.3V power supply ripple the part can tolerate before the jitter performance is compromised? We are currently driving it with a switching regulator and we do not want to add an extra low noise regulator and burn the associated power unless absolutely necessary.