This application note presents the TH7122 and TH71221 transceivers used in narrow band FSK applications. It briefly describes the narrow band considerations, the VCO design, PLL set-up, as well as the ...
The most basic characteristic of a Voltage Controlled Oscillator (VCO) is the manner in which the oscillator changes frequency as a function of voltage applied to its tuning port. As the state of the ...