NJM2592 JRC, NJM2592 Datasheet - Page 9

• Manufacturer Part Number: NJM2592
• Description: FM IF Demodulator IC / SSOP20
• Manufacturer: JRC

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Ver.2004-08-25
APPLICATION CIRCUIT
External Local Oscillator Signal Input
Local Oscillator with External Crystal and LC Resonant Elements
BPF
Overtone
Crystal Unit
LNA
V
Input Imp.50ohm
+
Input Imp.50ohm
20
1
20
1
OSC
OSC
MIXER
BUFFER
MIXER
BUFFER
External
Oscillator
19
19
2
2
18
3
18
3
RSSI
V
OUT
RSSI
OUT
V
17
+
4
17
+
4
RSSI COMP
RSSI COMP
+
-
+
-
CARRIER
IF Filter
SENSE
CARRIER
SENSE
IF FILTER
V
V
16
+
5
16
+
5
RSSI
RSSI
V
V
OUT
FSK COMP
FSK
+
OUT
FSK COMP
FSK
+
15
6
15
6
IF AMP
C
IF AMP
C
+
-
DEC
+
-
DEC
CHARGE
+
SWITCH
-
CHARGE
+
SWITCH
-
Hi
Hi
14
7
14
7
+
C
Lo
+
C
Lo
REF
CHARGE
REF
CHARGE
13
FILTER AMP
8
FILTER AMP
13
8
Tank
DET
TANK
+
-
DET
+
-
12
9
12
9
11
10
11
10
QUAD
DET
QUAD
DET
V
V
+
+
NJM2592
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