TDA7000 - A Complete FM Radio on a Chip
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Fig.16 A narrow band f.m. receiver with a crystall - controlled local - oscillator
Fig 17 I.F. Selectivity for the narow band f.m. receiver.
| AUDIO AMPLIFIER AND DETUNING
Audio output stages suitable for use with the TDA7000 are shown in Fig. 18 and 19. Figure 20 shows how the muting signal can be used to o rate a LED to give an indication of detuning.
fig.18 A 0.4 mW transistor audio output stage without volume control
for driving an earpeach
fig.18 A 0.4 mW transistor audio output stage without volume control for driving an earpeach