I used ADF4360-8 in my project. Most of PLLs can lock well - 98 boards of 100 boards. But some can lock firstly, then they lost lock after a period of time. I also changed new ADF4360-8 in failed board, the unlock is always there...
My schematic is attached and my register setting is as below.
/* Config ADF4360 Registers*/
adf4360_write(0x340011); /* R counter latch */
adf4360_write(0x06f924); /* Control latch */
adf4360_write(0x002802); /* N counter latch */
Could you please help give some comments or clues for the issue?
Thanks in advance!