It's digital. If analog output voltages are needed, they are filtered from the comparator outputs.
It's digital. If analog output voltages are needed, they are filtered from the comparator outputs.
If you want to track a microphone signal it is probably still possible but you would have to amplify it to digital levels and clip it. Please explain the purpose of the project, are you trying to measure frequency or use the PLL to track an oscillator to the the input frequency? 350Hz to 550HZ seems an unusual range to deal with.
Brian.
As filip.amator noted, pin 14 is an amplified input that can accept a lower-level AC sinewave signal (below).
And, as noted, the XOR Phase Comparator 1 would be best for noisy signals.
View attachment 139818
Right...............
Also no need to use clock divider right?
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