PLL中的控制電壓?

kmchen3089

I  find that perhaps it's effect is like open loop
modulation. I mean that the average vco input voltage is fixed by another negative feed back loop
; B4 L2 O; D! @& a$ Xbut add some small ac voltage into the vco input node to get like Frequency modulation
(spread spectrum effect) the above is my concept
; C& z9 D" ]% w- Q8 q& Ujust provide you to think about it