Hi Texas Instruments,
I want to make 11GHz output on LMX2492 and external VCO, MAOC-009265-TR0500(VCO on LMX2492evm) or most of VCO on market have 12V Vtune, but CPout of LMX2492 is 5V. Therefore, I need an active loop filter.
I use Pllatinum Sim, there are 3 active filters are: type A, B, C.
1. Type A and B: have not AmpGain option, can I use type A or type B to control 12V Vtune VCO?
I try this Schematic but it not working, Cpout connect CPout on LMX2492, Vtune connect Vtune of VCO
2. Also, I try type C with ampgain is 3(5V CPout x 3 = 15V Vtune), its not working again, can you help me?
here is my Schematic:
Where is my wrong?