NJM2552 JRC, NJM2552 Datasheet - Page 8

• Manufacturer Part Number: NJM2552
• Description: FM IF Demodulator IC / SSOP20
• Manufacturer: JRC

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Ver.2006-11-06
Pin No.
10
11
12
13
9
FM AF OUT
FM IF OUT
AMP OUT
SYMBOL
QUAD IN
AMP IN
10
11
12
9
GND
GND
GND
V+
V+
V+
GND
V+
EQUIVARENT CIRCUIT
400
95u
95u
20u
100k
10p
7.3k
20u
13
400
VOLTAGE
0.66V
0.71V
1.8V
2.7V
--
FM IF Output
This is an output of FM IF signal
passing though the internal FM
amplifier.
An external phase - shifting
capacitor is connected between
pin9 and pin10.
Quadrature Detector Input
An external phase - shifting coil or
ceramic discriminator is
connected.
FM Demodulated Signal Output
An external 3rd order multiple feed
-back filter (RC filter) is connected.
Input of Amplifier for Low Pass
Filter
External RC components form a
low pass filter between pin12 and
pin13.
This terminal is biased from pin 11
though an external RC filter.
Output of Amplifier for Low
Pass Filter
FUNCTION
NJM2552
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