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LMX2595: Spurious in the output of LMX2595

Surya K1
Prodigy 40 points

Part Number: LMX2595

Hello,

We are using LMX2595 to generate 12.8GHz from a 70MHz reference. Internal doubler is enabled and the charge pump current is 15mA. It is found that the LMX2595 is generating spurious frequencies at +/- 140MHz away from 12.8GHz at 45dBc down. Could you please let us know on how to reduce these spurs.