HMC820锁相环工作大于3个月时间后有些芯片失锁有30%（大概有100块），通过重新更换锁相环芯片的方式，主板正常工作，现在想读取锁相环里面的程序，请问有什么办法吗？现在找不到失锁的原因。
想要得到4.8GHz信号，但按照手册上所说，VCO Reg02设置为8395 ，VCO Reg03设置为D11D，始终输出2.4G左右信号，4.8G附近有输出但是功率特别低。请问应该怎么配置寄存器才能只输出2倍频？
Thank you very much dyoung1,
Please attached example configuration files for HMC765 and HMC820 (f0/2 mode board). File which you attached is only HMC820 (f0 mode).
DanVN
I've attached the HMC820 and HMC765 gerber files.
I have used HMC833 HMC830 HMC840 HMC829 HMC820。
I need to improve my PLLVCO products phase noise。
Thanks a lot. So, at a high level, this does work: I first load HMC834 into the evaluation software and get it to lock by loading its register file. Then, I close the evaluation software and open it again, but this time using HMC820 settings (the lock…
Use the ADP150 regulator; good performance, low cost.
Use…
This note discusses best practices for use of the Serial Port Interface (SPI) Mode selection feature of HMC PLL and PLLVCO product lines.
The attached FAQ document provides additional information on the use of the PLL+VCO and Clock Timing family of products. Specifically,
the applicable products are:
HMC820LP6CE HMC821LP6CE HMC822LP6CE HMC824LP6CE HMC826LP6CE
HMC828LP6CE HMC829LP6…