We are using one PLL IC (CD 4046) in our circuit to generate output voltage in DC corresponding to the phase difference between two i/p square signals.One is the VCO from PLL and the other one is from outside.
The circuit is working.....but one problem we r nw facing is the output voltage keeps on increasing..........
Can anyone suggest what is the reason for that? it wil be very helpful if u provide us a suggestion