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ICs for Audio Common Use
OverviewThe AN7149N 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 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.
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
29.9
60.3
29.6
0.3
12
1
Unit : mm
28.0
0.3
20.0
0.2
5.90.25 7.70.3 7.80.25
1.2
0.1
2.54
0.6
0.1
3.5
0.30
.35
+0.1
0.0
5
3.6
R1.8
0.6
12-Lead SIP Package with Fin (HSIP012-P-0000A)
Block Diagram
InputCircuit
DriverCircuit
OutputCircuit
GND (Output)GND (Input)
2
3
Input
Circuit
Driver
Circuit
Output
Circuit5
6 4 9 8
12
10
7
1 11
VCC
Over CurrentOver TemperatureProtection
Pin Descriptions
Pin No. Pin Name
12
3
4
5
6
N.F.B Ch.1Input Ch.1
Ripple Filter
GND (Input)
Input Ch.2
N.F.B Ch.2
Pin No. Pin Name
78
9
10
11
12
Output Ch.2Bootstrap Ch.2
GND (Output)
VCC
Bootstrap Ch.1
Output Ch.1
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ICs for Audio Common UseAN7149N
Absolute Maximum Ratings (Ta= 25C)
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 = 3THD= 10%, RL = 4
Parameter Symbol Condition min. typ. max. Unit
Electrical Characteristics (VCC = 12V, RC = 3, f= 1kHz, Ta=
25C)
Quiescent Circuit Current
Voltage Gain
Total Harmonic Distortion
ICQ
GV
THD
47.5
4.7
40
13
49.5
0.2
5.34.3
2.9
0.5
0
45
19
51.5
0.5
1.0
1.0
mA
dB
%
W
mV
dB
dB
Rg = 10k, 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
POTHD= 10%, VCC = 9V,RL = 3
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 (j c= 3C/W)
(2) With a 100cm23mm Al heat sink (black color coated) or a
200cm22mm Al heat
sink (not lacquered)(3) With a 100cm22mm Al heat sink (not
lacquered)(4) Without heat sink
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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= 12VRL= 3
GV, THD f
50
49
48
47
46
45
44
Frequency f (Hz)
VoltageGainGV(dB)
100k10 100 1k 10k
THD
VCC= 12VRL= 3Vin= 3mV
GV
1.0
0.8
0.6
0.4
0.2
TotalHarmonicDistortionTHD(%)
RL= 4
RL= 3
RL= 2
f = 10kHz
f = 1kHz
f = 100Hz THD
POf = 1kHz
Vno Rg
Input Resistance Rg()
OutputNo
iseVoltageVno
(mV)
100k10 100 1k 10k
1.0
0.8
0.6
0.4
0.2
0
DIN/AUDIO
VCC= 12VRL= 3
FLAT
RL= 6
THD = 10%f = 1kHz
0.1F3
1
10
2
5
6
11
12
7
8
4 9
AN7149N
+100F
Input Ch.1
+1000F
+1000F
VCC
+
+
47F 1000F
2.2
1000F47F
2.2
0.1F
Input Ch.2
100F
+
+
+
Application Circuit
Printed Circuit Board Layout
Input2
GND
Input1
+
+
+
+
+
+
+
+
100F
100F100F
47F47F 1000F
GND
VCC
Output1
Output2
1000F
1000F
2.2
0.1F
1 12
2.2
0.1F
AN7149N
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