NJM2552 Datasheet, PDF (8/21 Pages) New Japan Radio – 100MHz INPUT MIXER AND 450kHz FM/AM IF DEMODULATOR IC

NJM2552
Pin No. SYMBOL
EQUIVARENT CIRCUIT
V⁺
9
FM IF OUT
9
95u
GND
V⁺
400
10
10
QUAD IN
GND
400
20u
11
FM AF OUT
V⁺
11
95u
100k
10p
VOLTAGE
FUNCTION
1.80V
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.
2.70V
FM Demodulated Signal Output
An external 3rd order multiple feed
-back filter (RC filter) is connected.
0.96V
GND
12
AMP IN
V⁺
20u
12
13
AMP OUT
GND
13
7.3k
0.66V
0.71V
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
Ver.2007-10-24
-8-