Alinco DJ-G5, Руководство по обслуживанию

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9) NJM2070M (XA0210)
Low Voltage Power Amplifier
Equivalent Circuit
NC
7 V+
6
OUTPUT
POWER
GND
V+=
6
V, Ta=25+/-2°C
Parameter
Condition Symbol Min.
Typ. Max. Unit
Supply voltage
V+
1.8
-
15
V
Idle current
RL=oo
lo
-
4 7 mA
Output voltage Vo
-
2.7
-
V
Input bias current I
b
-
200
-
nA
Output power
THD=10%, f=1kHz V+=6V, RL=4£2
Po
0.5 0.6
-
W
V+=4.5V, RL=4£2
-
0.32
-
W
V+=3V, RL=4£2
- 120
-
mW
V+=2V, RL=4£2
-
30
-
mW
THD=1%,f=1kHz V+=6V, RL=4£2
-
500
-
mW
V+=4.5V, RL=4£2
-
250
-
mW
Distortion Po=0.4W, RL=4ß, f=1kHz THD
-
0.25 -
%
Voltage gain f=1kHz
Av 41
44
47
dB
Input impedance f=1kHz ZlN 100
-
-
kiî
Equivalent input noise
voltage
Rs=10k£2 A curve Vn1
-
2.5
-
nv
B=22Hz to 22kHz Vn2 -
3
- nv
Power supply voltage
rejection ratio
f=100Hz, Cx=100jiF SVR 24 30
-
dB
Power gain band width
(-3dB)
RL=8ii, Po=250mW P.B
-
200
-
kHz
21