TH71112 receiver equivalent, fsk/ask receiver.
! Double superhet architecture for high degree of image rejection ! FSK for digital data and FM reception for analog signal transmission ! FM/FSK demodulation with phase-.
because there is only one IF that might be chosen, and then the only possible choice is low-side or high-side injection .
The TH71112 receiver IC consists of the following building blocks:
" PLL synthesizer (PLL SYNTH) for generation of the first and second local oscillator signals LO1 and LO2 " Parts of the PLL SYNTH are the high-frequency VCO1, the feedback dividers D.
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