The PLL FM demodulator (LM565CN、RC4558DN) circuit

Published:2011/6/16 20:48:00 Author:qqtang | Keyword: FM demodulator | From:SeekIC

In the figure is a 10kHz±3kHz FM demodulator circuit consisting of LM565CN. The differential demodulation of V1 and V2 is level-shifted and amplified by A1 difference amplifier in figure (b), then the 20KHz pulse impulse momentum is removed by LPF composed of A2.



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