NJM2552 JRC, NJM2552 Datasheet - Page 4

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

www.DataSheet4U.com
Ver.2006-11-06
TEST CIRCUIT
This test circuit allows the measurement of all parameters described in “ELECTRICAL CHARACTERISTICS”. This
test circuit includes some electrical switches that should be in the suitable position for the measurement of each
parameter.
Circuit 1 (Iccq1, Iccq2)
Circuit 2 (SINAD)
MHz
20.25
20.7
MHz
LOCAL IN
R2
51
MIX IN
MIX IN
20
20
1
1
1000p
C2
C1
1000p
C1
1000p
LOCAL IN
C15
10u
Iccq1
Iccq2
19
19
2
2
0.1u
C14
V
V
+
AMP
OSC
+
AMP
OSC
MIXER
MIXER
AM AGC
AM AGC
C16
10u
C16
10u
18
18
IN
IN
3
3
C2
1000p
1000
1000
C8
AGC
C8
AGC
RF AGC
RF AGC
OUT
OUT
17
17
4
4
+ -
CERAMIC
+ -
FILTER
1000
1000
C7
C7
RSSI
OUT
RSSI
OUT
16
AM AMP
16
AM AMP
5
5
C3
68n
C3
68n
V
V
+
+
RSSI
AM SW
RSSI
AM
SW
15
15
6
6
ON
C4
68n
C4
68n
DET
AM
DET
AM
AM AF
AM AF
OUT
OUT
14
14
7
7
C5
0.1u
C5
0.1u
AMP
+
AMP
OUT
-
+
OUT
-
13
13
8
8
C6
0.1u
C6
0.1u
FM AMP
-A
270k
FM AMP
-A
R4
AMP
AMP
12
IN
12
9
IN
9
AMP
AMP
C13
18p
R10
1.5k
FM AF
FM AF
OUT
OUT
10
11
10
11
R9
10k
R10
1.5k
CD
0.1k to 30k
DET
DET
FM
FM
BPF
C12
0.01u
V
V
+
+
SINAD
NJM2552
C17
10u
- 4 -