Part Number: LMX2594
Hi ,
I have a project using LMX2594, during the test process, the output power can not reach the nominal value of the data manual, please help to find out the reasons.
The following is the principle design and PCB design of my PLL LMX2594. At present, the output frequency of the PLL is 8.375GHZ. The differential pull-up resistance of the output port is 50R. The inductor has tried 18nH and 1nH.
The configuration program changes the output power, but the output power can never reach the value of the output power in the data manual.
The output is about 10 dB by -5 dBm. I also tried to replace 50R resistance with 1uH inductor, resulting in worse output power.
Please help to check whether there is any problem in the scheme design. Thank you！
