ICs for Audio Common Use
AN7148
P
O
, THD – V
in
10
100
Total Harmonic Distortion THD (%)
Voltage Gain G
V
(dB)
V
CC
= 9V
R
L
= 4Ω
f = 1kHz
1
Output Power P
O
(W)
10
45
G
V
44
43
Total Harmonic Distortion THD (%)
42
41
1.0
0.8
0.6
0.4
V
CC
= 9V
R
L
= 4Ω
V
in
= 3mV
0.001
0.1
1
10
0.01
100
10
100
THD
0.2
10k
0
100k
G
V
, I
CQ
, THD – V
CC
Voltage Gain G
V
(dB)
46
G
V
45
44
f = 1kHz
R
L
= 4Ω
G
V
, THD – f
Quiescent Circuit Current I
CQ
(mA)
Total Harmonic Distortion THD (%)
0.1
THD
0.8
15
I
CQ
10
THD
5
0
0.2
0
24
0.4
0.6
1
0.01
P
O
0.1
0
4
8
12
16
20
1k
Supply Voltage V
CC
(V)
Input Voltage V
in
(mV)
Frequency f (Hz)
P
O
– V
CC
20
18
16
Output Power P
O
(W)
14
12
10
R
L
= 3Ω
8
6
4
2
0
0
4
8
12
16
20
24
R
L
= 4Ω
THD = 10%
f = 1kHz
Output Noise Voltage V
no
(mV)
1.6
1.4
1.2
1.0
0.8
0.6
V
CC
= 9V
R
L
= 4Ω
V
no
– R
g
FLAT
0.4
DIN/Audio
0.2
0
0.1k
1k
10k
100k
1000k
Supply Voltage V
CC
(V)
Input Resistance R
g
(Ω)
s
Application Circuit
V
CC
–
+
1000µF
3
10
11
+
–
1000µF
0.1µF
+
–
100µF
+
–
1
2.2Ω
1000µF
+
–
47µF
2
12
Input Ch.1
AN7148
5
Input Ch.2
6
100µF
+
–
7
47µF
–
8
4
9
+
+
–
1000µF
0.1µF
2.2Ω
PANASONIC [ PANASONIC SEMICONDUCTOR ]
