Implementing FSK modulation, demodulation
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier wave. This application report discusses logic level implementation of binary FSK (BFSK) modulator and demodulator using a phase-locked loop PLL device – CD54HC4046A, CD54HCT4046A, CD74HC4046A, and CD74HCT4046A (hereafter in this document referred to as HC/HCT4046A). BFSK is the simplest FSK, using a pair of discrete frequencies to transmit binary information.
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Originally published by Texas Instruments at www.ti.com as "Implementation of FSK Modulation and Demodulation using CD74HC4046A".
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