Hi There,
When we design a product with LMX2820, we found out that the output phase noise is different from the simulation result.
We use 400M reference phase noise is -146dBc@10KHz.
Fpd=200MHz, using internal binary frequency, output frequency is 1700M, test phase noise is -121dBc@10K. But the simulation is -127 dBc/Hz@10k.
Schematic design is the same as typical application in datasheet.
Is there any configuration improvement suggestion?