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The clock synthesizer circuit composed of the MC74HC4046

2017-01-06 17:06  
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The clock synthesizer circuit composed of the MC74HC4046
The clock synthesizer circuit which is composed of the MC74HC4046 is as shown in the figure, it can produce the 1MHZ~2OMHZ high precision clock signal. The output A is the 1MHZ~2OMHZ signal with the resolution ratio of 100kHz, the output B and output C outputs the signal with the 1/10 frequency respectively. If the input signal Vi is the 10kHz frequency demultiplication signal of the crystal circuit, the frequency precision of this circuit is the same as the crystal oscillator.