NJM2552 JRC, NJM2552 Datasheet - Page 7

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

www.DataSheet4U.com
Ver.2006-11-06
Pin No.
TERMINAL FUNCTION (
1
2
3
4
5
6
7
8
SYMBOL
MIX OUT
AM IF IN
AM DEC
FM DEC
OSC (B)
OSC (E)
FM IF IN
GND
5
6
7
8
1
2
3
GND
V+
GND
V+
Ta=25°C, V
V+
V
GND
GND
EQUIVARENT CIRCUIT
0.9k
10k
1.4k
51k
22k
0.9k
+
=2.7V
-
25u
1.24V
2k
135u
170u
)
2k
200k
80u
20p
VOLTAGE
2.66V
1.95V
1.75V
1.35V
1.35V
2.66V
2.66V
--
Oscillator Base /
Oscillator Emitter
Colpitts - type oscillator is formed
with an external oscillator element
of crystal unit or SAW resonator.
Output of an external oscillator
circuit can also input to pin1 or
pin2.
Mixer Output
An external 450kHz ceramic filter
is connected. The typical output
impedance is 1.8kΩ.
Ground
AM IF Input
This is an AM IF signal input to
AGC amplifier. The typical input
impedance is 10kΩ.
AM IF Decoupling
This is an AM IF decoupling
terminal for AGC amplifier.
An external decoupling capacitor
is connected to enhance stability.
IF Limiter Amplifier Input
This is an input to the IF amplifier
after passing through 450kHz
ceramic filter. The typical input
impedance is 1.8kΩ.
IF Decoupling
An external decoupling capacitor
is connected to enhance stability.
FUNCTION
NJM2552
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