PLL FM demodulator circuit diagram
Source: InternetPublisher:兰博 Keywords: Circuit diagram demodulator FM PLL Updated: 2021/04/13
The circuit diagram of the PLL FM demodulator is as follows:
As shown in the figure, the circuit uses LM565CN to form a 10kHz±3kHz FM demodulation circuit. The differential demodulation output of V1 and V2 is level shifted and amplified using the A1 differential amplifier in Figure (b), and then the active LPF composed of A2 filters out the 20kHz pulsation component.
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