1. ICs for Audio Common Use
s Overview
The AN7149N is an integrated circuit designed for
power amplifier of 5.3W (12.0V, 3Ω) 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 few, it is most suitably
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-densely mounted
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 components
AN7149N
Dual 5.3W Audio Power Amplifier Circuit
29.96±0.3
29.6±0.3
12
1
Unit : mm
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
ø 3.6
R1.8
0.6
12-Lead SIP Package with Fin (HSIP012-P-0000A)
s Block Diagram
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
VCC
Over Current
Over Temperature
Protection
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)
VCC
Bootstrap Ch.1
Output Ch.1

2. ICs for Audio Common UseAN7149N
s Absolute Maximum Ratings (Ta= 25˚C)
VCC
ICC
PD
Topr
Tstg
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
Vi = 0mV
PO = 1.0W
PO = 1.0W, f= 1kHz
THD= 10%, RL = 3Ω
THD= 10%, RL = 4Ω
Parameter Symbol Condition min. typ. max. Unit
s Electrical Characteristics (VCC = 12V, RC = 3Ω, f = 1kHz, Ta = 25˚C)
Quiescent Circuit Current
Voltage Gain
Total Harmonic Distortion
ICQ
GV
THD
47.5
4.7
40
13
49.5
0.2
5.3
4.3
2.9
0.5
0
45
19
51.5
0.5
1.0
1.0
mA
dB
%
W
mV
dB
dB
Rg = 10kΩ, f= 15Hz ~ 30kHz,
12dB/OCT
PO = 0.5W
PO = 0.5W
Maximum Output Power
Output Noise Voltage
Channel Balance
Ripple Rejection Ratio
Vno
CB
RR
PO
THD= 10%, VCC = 9V,
RL = 3Ω
PD – Ta
50
40
30
20
10
0
Ambient Temperature Ta (˚C)
PowerDissipationPD(W)
1200 40 80
(4)
160
(3)
(2)
(1)
(1) Tc = Ta (θj– c = 3˚C/W)
(2) With a 100cm2
× 3mm Al
heat sink (black color coated)
or a 200cm2
× 2mm Al heat
sink (not lacquered)
(3) With a 100cm2
× 2mm Al
heat sink (not lacquered)
(4) Without heat sink

3. ICs for Audio Common Use AN7149N
PO, THD – Vin
10
1
0.1
0.01
Input Voltage Vin (mV)
OutputPowerPO(W)
1000.1 1 10
10
1
0.1
PO – VCC
16
14
12
10
8
6
4
2
0
Supply Voltage VCC (V)
MaximumOutputPO(W)
120 4 8 2016
TotalHarmonicDistortionTHD(%)
VCC = 12V
RL = 3Ω
GV, THD – f
50
49
48
47
46
45
44
Frequency f (Hz)
VoltageGainGV(dB)
100k10 100 1k 10k
THD
VCC = 12V
RL = 3Ω
Vin = 3mV
GV
1.0
0.8
0.6
0.4
0.2
TotalHarmonicDistortionTHD(%)
RL = 4Ω
RL = 3Ω
RL = 2Ω
f = 10kHz
f = 1kHz
f = 100Hz THD
PO
f = 1kHz
Vno – Rg
Input Resistance Rg (Ω)
OutputNoiseVoltageVno(mV)
100k10 100 1k 10k
1.0
0.8
0.6
0.4
0.2
0
DIN/AUDIO
VCC = 12V
RL = 3Ω
FLAT
RL = 6Ω
THD = 10%
f = 1kHz
0.1µF3
1
10
2
5
6
11
12
7
8
4 9
AN7149N
–
+
100µF
Input Ch.1
–
+
1000µF
–
+
1000µF
VCC
–
+
+ –
47µF 1000µF
2.2Ω
1000µF47µF
2.2Ω
0.1µF
Input Ch.2
100µF
–
+
–
+
+ –
s Application Circuit
Printed Circuit Board Layout
Input2
GND
Input1
–
+
+
–
+
–
+
–
+
–
–
+
+ –
+–
100µF
100µF
100µF
47µF
47µF 1000µF
GND
VCC
Output1
Output2
1000µF
1000µF
2.2Ω
0.1µF
1 12
2.2Ω
0.1µF
AN7149N