NJM2549
ꢀ TEST CIRCUIT
This test circuit allows the measurement of all parameters described in “ELECTRICAL CHARACTERISTICS”.
Test Circuit 1 (Detected Output: S-Curve)
V+
AF OUT
RSSI OUT
Audio Analyzer
Input impedance = 100kΩ
LPF = 30kHz
V
T1
R2
C6
82p
C7
0.01u
C4
100p
2.4k
C5
3p
10
9
8
7
6
QUAD
DET
IF AMP
RSSI
1
2
3
4
5
C1
C2
C3
0.01u
0.01u
0.01u
C9
10u
C8
0.01u
R1
51
Zo=50
IF IN
Test Circuit 2 (Detected Output: N-Curve, the Detected Output is reversed)
V+
AF OUT
RSSI OUT
Audio Analyzer
Input impedance = 100kΩ
LPF = 30kHz
V
T1
R2
C6
82p
C7
0.01u
C4
100p
2.4k
C5
3p
10
9
8
7
6
QUAD
DET
IF AMP
RSSI
1
2
3
4
5
C1
C2
C3
0.01u
0.01u
0.01u
C9
10u
C8
0.01u
R1
51
T1:4CJH(Sample No.:080293006)
SAGAMI ELEC CO., LTD. (Japan)
Zo=50
IF IN
Ver.2010-06-24
- 4 -
NJRC [ NEW JAPAN RADIO ]
