NJM2550 JRC, NJM2550 Datasheet - Page 13

• Manufacturer Part Number: NJM2550
• Description: FM IF Demodulator IC / SSOP16
• Manufacturer: JRC

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Ver.2006-02-24
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
2.5
1.5
0.5
1
0
2
1
0
AF OUT versus IF Frequency(S Curve)-10.7MHz-
Demodulated Signal Frequency Characteristics
140
120
100
9.5
80
60
40
20
0
VinIF=80dBuV
0
V+=9V
V+=3V
V+=2V
10
fdev=±100kHz, VinIF=80dBuV
RSSI Output versus IF Input
20
fif=50MHz
fif=10.7MHz
FM Modulation Frequency(kHz)
IF Input Level VinIF(dBuV)
10
IF Frequency fif (MHz)
40
100
10.5
60
fif=10.7MHz
80
1000
fif=50MHz
11
100
10000
11.5
120
90
85
80
75
70
65
60
55
50
45
40
1.6
1.4
1.2
0.8
0.6
0.4
0.2
2.5
1.5
0.5
1
0
2
1
0
AF OUT versus IF Frequency(S Curve)-50MHz-
49
1
1
VinIF=80dBuV
V+=3V
RSSI Output versus IF Frequency
IF AMP Gain versus IF Frequency
V+=9V
V+=2V
49.5
IF Frequency fif (MHz)
IF Frequency fif (MHz)
IF Frequency fif (MHz)
50
10
10
VinIF=40dBuV
VinIF=80dBuV
NJM2550
50.5
Simulation
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51
100
100