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need help in PLL demodulator project

I've made a PLl as a demodulator circuit using MM74HC4046. But there is something wrong with it.
I attach this email with the schematic and the output signal.

R1==100k,R2600k,R33=330k, C1=1.5nF,C2=0.1uF.
the VCO center frequency is 26.7kHz.

The main frequency is 10kHz.
The modulation rate is 1kHz.
 

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  • pll demodulator circuit diagram.jpg
    pll demodulator circuit diagram.jpg
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  • output signal pll demodulator.jpg
    output signal pll demodulator.jpg
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I've made a PLl as a demodulator circuit using MM74HC4046. But there is something wrong with it.
I attach this email with the schematic and the output signal.

R1==100k,R2600k,R33=330k, C1=1.5nF,C2=0.1uF.
the VCO center frequency is 26.7kHz.

The main frequency is 10kHz.
The modulation rate is 1kHz.

what are you trying to make from your 4046? i am also working on MM74HC4046. whay are you using this ic. even a CD4046 can take this range.
 
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