BA1442A データシートの表示（PDF） - ROHM Semiconductor

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BA1442A

AM radio / FM IF stereo system IC

ROHM Semiconductor 

Audio ICs

Pin 6: AFC circuit

It is possible to use the pin 6 detector output DC voltage

and apply AFC. Fig. 12 shows an application example

where the BA4424N is used as the FM front end.

Even if you will not use AFC, when recovering the sub-

carrier phase-modulated composite signal (voice-multi-

plexed TV) in the next stage, match the oscillator and “S”

curve orientations in the same way as described above.

If they are reversed, the left and right channels of the re-

covered audio will be reversed.

BA1442A

349

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