On Sat, Mar 23, 2019 at 03:47 PM, Thomas S. Knutsen wrote:
Most of the black boards have better RF design than the green one. The green ones have some part of the PLL loop filter running under the capacitors that AC couples the output.
Did you measure black boards? If so, what spur performance did you get, in particular the ref clock spur is degrading performance to unacceptable level. Can you suggest improvement options?