I am using the ADF4350 for my transmit LO in a SDR. I get the part working just fine with good results, but then the part just dies on me. Not sure what's causing the problem. Circuit and layout both look good. I did have one issue where the LE line was power up to 3.3 V before the parts power rail was fully up to 3.3V, but the part was fully powered when programmed over the SPI bus. I can't see how a high LE line before power would kill the VCO output.
To help, I've attached image files showing the schematic and layout.
Any ideas would be greatly appreciated.