Other Parts Discussed in Thread: LMX2820
Please explain how to operate in External Mixer mode, per fig 15 of the LMX2820 data sheet? I have the eval PWB, and am running latest TICS Pro - 1.7.0.0. The VCO is 10.4G, after doubler it is 20.8G. I mix with 20G , and return 800M to the PFDIN pin. I set PFD_SINGLE= 3 or "Single PFD" - correct? However, it is not responding to changing the PFDIN divider (=4 in screen shot). The PLL freq is still changing per the N Divider =(52.X/20)*0.4 GHz
