NJM2549RB2 Ver la hoja de datos (PDF) - Japan Radio Corporation
Número de pieza
componentes Descripción
Fabricante
NJM2549RB2 Datasheet PDF : 18 Pages
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NJM2549
Test Circuit 7 for RSSI Response
C7
0.01u
AF OUT V+
T1
C6
82p
10
9
R2
2.4k
C5
3p 8
Oscilloscope
C4
100p
7
6
QUAD
DET
IF AMP
RSSI
1
2
3
4
5
C1
0.01u
C2
0.01u
C3
0.01u
C9
C8
R1
10u
0.01u
51
Zo=50
IF IN Signal ON to OFF
OFF to ON
Test Circuit 8 for Demodulated signal (LPF is connected)
Audio Analyzer
Input impedance = 100kΩ
LPF = 30kHz
Ca
3300p
-
+
1
fc= 2 π 3 RaRbRcCaCbCc Hz
Ra Rb Rc
68k 68k 68k
Cb
330p
Cc
1000p
AF OUT
V+
C7
0.01u
T1
C6
82p
10
9
R2
2.4k
C5
3p 8
RSSI OUT
V
C4
100p
7
6
QUAD
DET
IF AMP
RSSI
1
2
3
4
C1
0.01u
C2
0.01u
C3
0.01u
C9
C8
R1
10u
0.01u
51
Zo=50
IF IN
5
T1:4CJH(Sample No.:080293006)
SAGAMI ELEC CO., LTD. (Japan)
Ver.2010-06-24
-7-
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