NJM2552 JRC, NJM2552 Datasheet - Page 11

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

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Ver.2006-11-06
EVALUATION PC BOARD
The evaluation board is useful for your design and to have more understanding of the usage and performance of
this device. This circuit is the same as TEST CIRCUIT. Note that this board is not prepared to show the
recommendation of pattern and parts layout.
Note:
1.
Circuit Diagram
External Components
R1=R6=R7=0Ω R2=51Ω R3=20kΩ R4=270kΩ R5=1kΩ R8=8.2kΩ R9=10kΩ R10=1.5kΩ
C1=C2=C7=C8=1000pF
C11=C12=0.01uF
CF=CFWCA450KEFA-R0 (Murata manufacturing Co., Ltd.)
CD=CDBCB450KCAY72-R0 (Murata manufacturing Co., Ltd.)
LOCAL IN
R2
51
MIX
IN
20
1
1000p
C1
1000p
C2
C15
10u
19
2
0.1u
C14
V
+
AMP
OSC
MIXER
AM AGC
C16
10u
C13=18pF
18
IN
3
C1
1000p
20k
R3
1000
C8
AGC
RF AGC
C3=C4=68nF
OUT
17
4
+ -
CERAMIC
FILTER
C15=C16=C17=10uF
1000
C7
RSSI
OUT
16
5
AM AMP
C3
68n
V
AM AF
+
C5=C6=C14=0.1uF
OUT
RSSI
15
6
C4
68n
DET
AM
0.01u
C11
R8
8.2k
14
7
C5
0.1u
AMP
OUT
+
-
13
8
C9
1u
C6
0.1u
270k
FM AMP
-A
R4
C9=C10=1uF
AMP
IN
12
9
AMP
C10
1u
R5
1k
C13
18p
R10
1.5k
FM AF
OUT
10
11
R9
10k
CD
DET
FM
NJM2552
C12
0.01u
V
+
C17
10u
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