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ICs for Audio Common Use
AN7149N
Dual 5.3W Audio Power Amplifier Circuit
s Overview
The AN7149N is an integrated circuit designed for power amplifier of 5.3W (12.0V, 3) output. Stereo operation 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.
5.90.25 7.70.3 7.80.25 o 3.6 12 Unit : mm
29.960.3 28.00.3 20.00.2
0.60.1
R1.8
0.6
1
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 s Pin Descriptions
Pin No. 1 2 3 4 5 6 Pin Name N.F.B Ch.1 Input Ch.1 Ripple Filter GND (Input) Input Ch.2 N.F.B Ch.2
+ 0.1 0.35 - 0.05 2.54
12-Lead SIP Package with Fin (HSIP012-P-0000A)
1.20.1
Pin No. 7 8 9 10 11 12
Pin Name Output Ch.2 Bootstrap Ch.2 GND (Output) VCC Bootstrap Ch.1 Output Ch.1
s Block Diagram
1 Input Circuit Driver Circuit 11 Output Circuit Over Current Over Temperature Protection Input Circuit 6 4 GND (Input) Driver Circuit 9 Output Circuit 8 GND (Output)
2
12
3
10 VCC
5
7
3.50.3
29.60.3
AN7149N
s Absolute Maximum Ratings (Ta= 25C)
Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg
ICs for Audio Common Use
Rating 24 4 41.7 - 30 ~ + 75 - 55 ~ + 150
Unit V A W C C
s Electrical Characteristics (VCC = 12V, RC = 3, f = 1kHz, Ta = 25C)
Parameter Quiescent Circuit Current Voltage Gain Total Harmonic Distortion Symbol ICQ GV THD Vi = 0mV PO = 1.0W PO = 1.0W, f = 1kHz THD = 10%, RL = 3 Maximum Output Power PO THD = 10%, RL = 4 THD = 10%, VCC = 9V, RL = 3 Rg = 10k, f = 15Hz ~ 30kHz, 12dB/OCT PO = 0.5W PO = 0.5W 40 4.7 47.5 Condition min. typ. 13 49.5 0.2 5.3 4.3 2.9 0.5 0 45 1.0 1.0 mV dB dB W max. 19 51.5 0.5 Unit mA dB %
Output Noise Voltage Channel Balance Ripple Rejection Ratio
Vno CB RR
PD - Ta
50 (1) Tc = Ta (j- c = 3C/W) (2) With a 100cm2 x 3mm Al heat sink (black color coated) or a 200cm2 x 2mm Al heat sink (not lacquered) (3) With a 100cm2 x 2mm Al heat sink (not lacquered) (4) Without heat sink
40 Power Dissipation PD (W) (1)
30
20 (2) 10
(3) (4)
0
0
40
80
120
160
Ambient Temperature Ta (C)
ICs for Audio Common Use
AN7149N
PO - VCC
16 14 12 RL = 3 10 RL = 4 8 RL = 6 6 4 50 Voltage Gain GV (dB) THD = 10% f = 1kHz RL = 2 Maximum Output PO (W) 49 48
GV, THD - f
PO, THD - Vin
VCC = 12V RL = 3 10 10 Total Harmonic Distortion THD (%)
GV
47 46 45 44
Total Harmonic Distortion THD (%)
Output Power PO (W)
VCC = 12V RL = 3 Vin = 3mV 1.0 0.8 0.6 0.4
f = 10kHz 1 f = 1kHz f = 100Hz
THD
1
0.1 PO f = 1kHz
0.1
2 0
THD
0.2 10k 100k
0
4
8
12
16
20
10
100
1k
0.01 0.1
1
10
100
Supply Voltage VCC (V)
Frequency f (Hz)
Input Voltage Vin (mV)
Vno - Rg
VCC = 12V RL = 3
s Application Circuit
VCC
- +
1000F 3 10 11
+ -
1000F 0.1F
+
Output Noise Voltage Vno (mV)
1.0 1 0.8 0.6 0.4 DIN/AUDIO 0.2 0 10 Input Ch.2 6 5 FLAT 100F
+ -
2.2 1000F
+ -
47F - 2 12
Input Ch.1
AN7149N
7 47F -
+ + -
1000F 0.1F
100
1k
10k
100k
100F
+ -
8 4 9
Input Resistance Rg ()
2.2
Printed Circuit Board Layout
AN7149N
Output2 - + Input2 1000F - + 1000F Output1
0.1
0.1F GND - + Input1 1 + - 100F - + 100F
F
100F
2.2
2.2
+- 47F 12 + - 1000F
VCC
-+ 47F
GND

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