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Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER General Description
The AA8227 is a monolithic dual audio power amplifier with built-in power on/off switch. It is designed for use in portable radio cassette, tape recorder and other audio products. Because it needs only few external components to work, an audio system adopting AA8227 will have a remarkable merit to save system space. This IC is available in HDIP-12 package.
AA8227 Features
* * * * * * * High Power: POUT=2.5W/CH (Typ) at RL=4, VCC1=VCC2=9V, THD=10% Built-in Standby Switch Built-in Thermal Shutdown Protection Circuit Low Popping Noise at Power On Soft Clip Few External Components Operating Supply Voltage Range: 5 to 15 V
Applications
* * * * * Mini 2.1-CH or 5.1-CH Audio Sound System PC External Audio Power Amplifier Portable Radio Cassette Tape Recorder Active Speaker
HDIP-12
Figure 1. Package Type of AA8227
Aug. 2006 Rev. 1. 0 1
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Pin Configuration
PH Package (HDIP-12)
VCC2 OUT1 BS1 PW_GND Pre_GND NF1 IN1
1 2 3 12 11 10
AA8227
VCC1 OUT2 BS2 PW_GND RIPPLE NF2 IN2
FIN
FIN
4 5 6
9 8 7
Figure 2. Pin Configuration of AA8227 (Top View)
Pin Description
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 FIN Pin Name VCC2 OUT1 BS1 Pre_GND NF1 IN1 IN2 NF2 RIPPLE BS2 OUT2 VCC1 PW_GND Supply voltage 2 Output of channel 1 Bootstrap of channel 1 Prestage ground Negative feedback of channel 1 Input of channel 1 Input of channel 2 Negative feedback of channel 2 Ripple rejection Bootstrap of channel 2 Output of channel 2 Supply voltage 1 Power ground Function
Aug. 2006 Rev. 1. 0 2
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Functional Block Diagram
VCC2
1
AA8227
VCC1
12 3
BS1 OUT1
IN1 NF1
6 5 45
+
_ CH1
30k
2
RIPPLE
9
BIAS CIRCUIT THERMAL SHUTDOWN PROTECTION CIRCUIT
FIN
PW-GND
IN2 NF2
7 8 45
+
_ CH2
11
OUT2 BS2
10 30k 4
Pre-GND
Figure 3. Functional Block Diagram of AA8227
Aug. 2006 Rev. 1. 0 3
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Ordering Information
AA8227 Circuit Type E1: Lead Free Package PH: HDIP-12
Temperature Range 0 to 70 oC
AA8227
Package HDIP-12
Part Number AA8227PH-E1
Marking ID AA8227PH-E1
Packing Type Tube
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 1)
Parameter Supply Voltage Peak Output Current (Each Channel) Total Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC1, VCC2 IO (peak) PD TA TSTG Value 18 2.5 4 -20 to 85 -50 to 150 Unit V A W
oC oC
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage Operating Ambient Temperature Symbol VCC1, VCC2 TA
Min
5 0
Max
15 70
Unit
V
o
C
Aug. 2006 Rev. 1. 0 4
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Electrical Characteristics
(VCC1=VCC2=9V, TA=25oC, RL=4, Rg=600, f=1KHz, unless otherwise specified.)
Parameter Supply Voltage Quiescent Current Quiescent Output Voltage Output Power (Each Channel) Total Harmonic Distortion Closed Loop Voltage Gain Symbol VCC ICC V2, V11 POUT THD GV VIN=0 VIN=0 THD=10%, RL=4 THD=10%, RL=3 POUT=0.4W/CH RNF=120, VOUT=0.775Vrms RNF=0, VOUT=0.775Vrms Channel Balance Input Resistance Output Noise Voltage Ripple Rejection Ratio Channel Separation Input Offset Voltage Standby Current Thermal Shutdown Junction Temperature 43 2.0 Conditions Min 5 21 4.5 2.5 3.0 0.2 45 56.5 0.3 30 1.0 47 % dB Typ Max 15 45 Unit V mA V W
AA8227
GV
RI VNO PSRR CS V6, V7 ISTB TSD SW1=off
1
1.0
dB k mVrms dB dB
Rg=10k, BW=20 to 20kHz
f=100Hz VOUT=0.775Vrms
0.3 52 50 30 1 175
60
mV A
oC
Typical Pin DC Voltage (VCC1=VCC2=9V, TA=25oC)
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 Pin Name VCC2 OUT1 BS1 Pre_GND NF1 IN1 IN2 NF2 RIPPLE BS2 OUT2 VCC1 DC Voltage (V) 9 4.5 8.7 GND 0.7 0.03 0.03 0.7 5 8.7 4.5 9
Aug. 2006 Rev. 1. 0 5
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Typical Performance Characteristics AA8227
100
100
Total Harmonic Distortion THD (%)
VCC2=5V
VCC2=6V VCC2=7V VCC2=8V VCC2=9V
Total Harmonic Distortion THD (%)
VCC1=9V RL=4 f=1kHz RNF=120
10
VCC1=VCC2=9V RL=4 RNF=120
10
TA=25 C
o
TA=25 C
o
1
f=10KHz f=1KHz
1
f=100Hz
0.1
0.1 0.01
0.1
1
10
0.01 0.01
0.1
1
10
Output Power POUT (W)
Output Power POUT (W)
Figure 4. Total Harmonic Distortion vs. Output Power
Figure 5. Total Harmonic Distortion vs. Output Power
100
1.2
10
TA=25 C
o
VCC1=VCC2=6V
Output Noise Voltage VNO (mVrms)
Total Harmonic Distortion THD (%)
f=1kHz RL=4 RNF=120
VCC1=VCC2=9V RL=4 1.0 RNF=120 BW=20 to 20kHz o TA=25 C
0.8
0.6
1
VCC1=VCC2=9V
0.4
0.1 0.01
0.1
1
10
0.2 10
100
1000
10000
100000
Output Power POUT (W)
Signal Source Resistance Rg ()
Figure 6. Total Harmonic Distortion vs. Output Power
Figure 7. Output Noise Voltage vs. Signal Source Resistance
Aug. 2006 Rev. 1. 0 6
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Typical Performance Characteristics (Continued) AA8227
80
0
60
Voltage Gain GV (dB)
TA=25 C
o
Channel Separation CS (dB)
VCC1=VCC2=9V RL=4 RNF=120
-20
40
-40
20
-60
VCC1=VCC2=9V RL=4 Rg=600 RNF=120 VOUT=0.775Vrms TA=25 C
o
0 10
100
1000
10000
100000
-80 10
100
1k
10k
Frequency f (Hz)
Frequency f (Hz)
Figure 8. Voltage Gain vs. Frequency
Figure 9. Channel Separation vs. Frequency
0
Channel Separation CS (dB)
Output Power POUT (W)
-20
VCC1=VCC2=9V f=1kHz RL=4 RNF=120 VOUT=0.775Vrms (0dBm) TA=25 C
o
6
5
f=1kHz THD=10% o TA=25 C
RL=4
RL=6
4
-40
RL=8
3
2
-60
1
-80 10
0
100
1000
10000
100000
4
6
8
10
12
14
16
Signal Source Resistance Rg ()
Supply Voltage VCC1, VCC2 (V)
Figure 10. Channel Separation vs. Signal Source Resistance
Figure 11. Output Power vs. Supply Voltage
Aug. 2006 Rev. 1. 0 7
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Typical Performance Characteristics (Continued) AA8227
6
6
5
VCC1=VCC2=12V
5
Power Dissipation PD (W)
VCC1=VCC2=12V f=1kHz o TA=25 C
RL=6
Power Dissipation PD (W)
4
4
3
VCC1=VCC2=9V
3
RL=8
2
2
1
RL=4 f=1kHz o TA=25 C
0 1 2 3 4 5 6
1
0
0 0 1 2 3 4 5 6
Output Power POUT (W)
Output Power POUT (W)
Figure 12. Power Dissipation vs. Output Power
Figure 13. Power Dissipation vs. Output Power
30
30
12
12
VIN=0
Quiescent Current ICC2 (mA)
Output Voltage V2, V11 (V)
ICC
20 20
ICC2
8
8
15
15
6
6
10
10
4
V2, V11
4
V2, V11
5 5
2
2
0 0 5 10
0 15
0 0 2 4 6 8 10 12
0 14
Supply Voltage VCC1, VCC2 (V)
Supply Voltage VCC2 (V)
Figure 14. Quiescent Current and Output Voltage vs. Supply Voltage
Figure 15. Quiescent Current and Output Voltage vs. Supply Voltage
Aug. 2006 Rev. 1. 0 8
BCD Semiconductor Manufacturing Limited
Output Voltage V2, V11 (V)
Quiescent Current ICC (mA)
25
TA=25 C
o
25
10
VCC1=12V VIN=0 TA=25 C
O
10
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Typical Performance Characteristics (Continued) AA8227
0
0
Ripple Rejection Ratio PSRR (dB)
Ripple Rejection Ratio PSRR (dB)
-20
VCC1=VCC2=9V RL=4 Rg=600 RNF=120 TA=25 C
o
-20
VCC1=VCC2=9V RL=4 RNF=120 f=100Hz o TA=25 C
-40
-40
-60
-60
-80 10
100
1000
10000
100000
-80 10
100
1000
10000
100000
Frequency f (Hz)
Signal Source Resistance Rg ()
Figure 16. Ripple Rejection Ratio vs. Frequency
Figure 17. Ripple Rejection Ratio vs. Signal Source Resistance
Aug. 2006 Rev. 1. 0 9
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Typical Application Circuit AA8227
VCC2
+
C10 1000F SW1
+
C11 100F 1
VCC1
12 3
C4 100F
+
CIN1 IN-1
+
6 5
+
_
45
CH1
30k
2
C8 1000F
+
OUT-1 RL
C1 47F
+
RNF1 120
C6 0.15F C3 47F CIN2 IN-2
+
9
+
BIAS CIRCUIT THERMAL SHUTDOWN PROTECTION CIRCUIT
FIN
7 8
+
_
45 30k
CH2
11
C5 100F
C9 1000F
+
OUT-2 RL
C2 47F
+
RNF2 120
10 C7 0.15F 4
Figure 18. Applicaton Circuit for AA8227
Aug. 2006 Rev. 1. 0 10
BCD Semiconductor Manufacturing Limited
+
Preliminary Datasheet DUAL AUDIO POWER AMPLIFIER Mechanical Dimensions HDIP-12 Unit: mm(inch) AA8227
4.060(0.160) TYP 3.100(0.122) 3.500(0.138)
0.510(0.020)MIN
3.000(0.118)MIN 0.219(0.009) 0.460(0.018) 0.560(0.022) 3.000(0.118)TYP 2.540(0.100) TYP 0.339(0.013) 7.620(0.300) TYP
MAX 10
6.150(0.242) 6.550(0.258)
1.524(0.060)TYP 18.900(0.744) 19.300(0.760)
Aug. 2006 Rev. 1. 0 11
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.
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BCD Semiconductor Manufacturing Limited
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REGIONAL SALES OFFICE
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