ICs for Audio Common Use
s
Overview
The AN7147N is an integrated circuit designed for
power amplifier of 5.3W (12.0V, 3
) output. Stereo oper-
ation is enabled due to incorporating two amps. on one
chip. It makes high reliability by smaller quiescent current
compared with power amp. current and protectors built in.
As quiescent circuit current is very small, it is most suit-
ably used for battery operated set such as radio cassette
recorder. Furthermore, low distortion and low noise are
realized and external components are very few. 12-pin
SIL package enabled compact and high integrated set.
s
Features
Low quiescent current
High operation stability
Low radiation
Low distortion
Low noise
Low shock noise from power ON/OFF operation
Fewer external componetns
AN7147N
Dual 5.3W Audio Power Amplifier Circuit
29.96
0.3
29.6
0.3
12
1
28.0
0.3
20.0
0.2
5.9
0.25 7.7
0.3 7.8
0.25
1.2
0.1
2.54
0.6
0.1
3.5
0.3
0.35
+ 0.1
0.05
3.6
R1.8
0.6
12-Lead SIP Package with Fin (HSIP012-P-0000A)
Unit : mm
Input
Circuit
Driver
Circuit
Output
Circuit
GND (Output)
GND (Input)
2
3
Input
Circuit
Driver
Circuit
Output
Circuit
5
6
4
9
8
12
10
7
1
11
V
CC
Over Current
Over Temperature
Protection
s
Block Diagram
s
Pin Descriptions
Pin No.
Pin Name
1
2
3
4
5
6
N.F.B Ch.1
Input Ch.1
Ripple Filter
GND (Input)
Input Ch.2
N.F.B Ch.2
Pin No.
Pin Name
7
8
9
10
11
12
Output Ch.2
Bootstrap Ch.2
GND (Output)
V
CC
Bootstrap Ch.1
Output Ch.1
ICs for Audio Common Use
AN7147N
s
Absolute Maximum Ratings
(Ta= 25C)
V
CC
I
CC
P
D
T
opr
T
stg
Supply Voltage
Supply Current
Power Dissipation *
Operating Ambient Temperature
Storage Temperature
V
A
W
C
C
Parameter
Symbol
Rating
Unit
24
4
41.7
30 ~ + 75
55 ~ + 150
* R
j c
= 3C/W
Parameter
Symbol
Condition
min.
typ.
max.
Unit
s
Electrical Characteristics
(V
CC
= 12V, R
C
= 3
, f
= 1kHz, Ta
= 25C)
Quiescent Circuit Current
Voltage Gain
Total Harmonic Distortion
Maximum Output Power
Output Noise Voltage
Channel Balance
Channel Separation
Ripple Rejection Ratio
Output Offset Voltage
I
CQ
G
V
THD
P
O
V
no
CB
CS
RR
V
O (offset)
V
i
= 0mV
P
O
= 1.0W
P
O
= 1.0W, f
= 1kHz
P
O
= 1.0W, f
= 100Hz
P
O
= 1.0W, f
= 10kHz
THD
= 10%, R
L
= 3
THD
= 10%, R
L
= 4
THD
= 10%, V
CC
= 9V, R
L
= 3
R
g
= 10k
, f
= 15Hz ~ 30kHz,
12dB/OCT
R
g
= 10k
, Without Filter
P
O
= 0.5W
P
O
= 0.5W
P
O
= 0.5W
V
i
= 0
42.5
4.7
40
45
13
44.5
0.2
0.4
0.3
5.3
4.3
2.9
0.25
0.40
0
50
50
0
19
46.5
0.75
0.5
1
200
mA
dB
%
W
mV
dB
dB
dB
mV
Note) Operating Supply Voltage Range : 5V to 22V
P
D
Ta
50
40
30
20
10
0
Ambient Temperature Ta (C)
P
o
w
e
r
D
i
s
s
i
p
a
t
i
o
n
P
D
(
W
)
0
40
80
(1) Tc= Ta (
j c
= 3C/W)
(2) With a 100cm
2
3mm Al
heat sink (black color coated)
or a 200cm
2
2mm Al heat
sink (not lacquered)
(3) With a 100cm
2
2mm Al
heat sink (not lacquered)
(4) Without heat sink
(4)
(3)
(2)
(1)
160
120
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