TERMINAL FUNCTION
PIN
No.
PIN NAME
FUNCTION
1 Limiter Input (1)
A sound carrier is input from SAW filter.
TA8721ASN
INTERFACE CIRCUIT
The De-Emphasis time constant is defined
2 De-Emphasis (1) by external capacitor.
5 Sound Output (1) This is an FM detector circuit output
terminal.
This is a connection terminal of sound
detection coil.
3 Limiter Output (1) This will be of no-adjustment type by using
4 SoundDetection(1) ceramic discriminator.
A sound muting will be performed by
connecting pin 4 to GND.
6 SIF GND
Connect a bypass capacitor between this
pin and SIF VCC of pin 12.
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