Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
General Description
Features
The AA4005 is a Class AB audio power amplifier
which can deliver 2.7W into 3Ω speakers with 5.0V
power supply and THD+N less than 10%. It is designed
specially for Notebook PC and portable media player
applications.
·
·
·
·
·
The AA4005 features stereo full differential input or 2 sets
of stereo Single-Ended audio input. There are 4 different
gain settings at BTL mode - 6dB, 10dB, 15.6dB and
21.6dB, changed by setting GAIN0, GAIN1 pins.
·
·
AA4005 is available in TSSOP-20 (EDP) package.
Output Power, THD+N=10%
1.5W at BTL Mode for 8Ω Speaker
2.3W at BTL Mode for 4Ω Speaker
2.7W at BTL Mode for 3Ω Speaker
Supply Voltage Range: 4.5V to 5.5V
4 Selectable Internal Fixed Gain Setups
Stereo Full Differential Input
Low Power Consumption at Shutdown Mode
150µA Typical
Excellent Click/POP Noise Suppression
Thermal Shutdown Protection
Applications
·
·
Notebook PC
Portable Media Player
TSSOP-20（EDP）
Figure 1. Package Type of AA4005
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
1
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Pin Configuration
G Package
(TSSOP-20(EDP))
GND
1
20
GND
GAIN0
2
19
SHUTDOWN
GAIN1
3
18
OUTR+
OUTL+
4
17
RIN-
LIN-
5
16
VDD
PVDD
6
15
PVDD
RIN+
7
14
OUTR-
OUTL-
8
13
GND
LIN+
9
12
NC
10
11
GND
BYPASS
Figure 2. Pin Configuration of AA4005 (Top View)
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
2
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Pin Description
PIN Number
PIN Name
Function
1, 11, 13, 20
GND
Ground reference, it is better to connect with thermal pad.
2
Gain0
Internal gain setup 0, see table-1 below.
3
Gain1
Internal gain setup 1, see table-1 below.
4
OUTL+
Left channel positive output
5
LIN-
6, 15
PVDD
Power supply for output stage
Left channel negative input
7
RIN+
Right channel positive input for differential input, AC ground for Single-ended
input.
8
OUTL-
9
LIN+
10
BYPASS
Left channel negative output
Left channel positive input for differential input, AC ground for Single-ended
input
Internal reference voltage pin, connect a 1.0µF ceramic capacitor to GND
12
NC
14
OUTR-
Right channel negative output
No connected
16
VDD
Power supply for analog circuit
17
RIN-
Right channel negative input
18
OUTR+
Right channel positive output
19
SHUTDOWN
Shutdown mode select,
L - Shutdown enable
H - Shutdown disable, normal work
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
3
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Table-1, Gain vs.Gain0, Gain1 Logic level
GAIN0
GAIN1
Gain
L
L
6dB
L
H
10dB
H
L
15.6dB
H
H
21.6dB
Ordering Information
AA4005
E1: Lead Free
G1: Green
Circuit Type
Package
G: TSSOP-20(EDP）
Package
Temperature
Range
TSSOP-20(EDP)
-40 to 85oC
TR: Tape and Reel
Part Number
Lead Free
Green
Marking ID
Lead Free
AA4005GTR-E1 AA4005GTR-G1 AA4005G
Green
AA4005G-G1
Packing Type
Tape and Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
4
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Power Supply Voltage
VDD
6.0
V
Input Voltage
VIN
-0.3 to VDD+0.3
V
Power Dissipation (Note 2)
PD
Internally limited
Thermal Resistance
θJA
35 (Note 3)
oC/W
Operating Junction Temperature
TJ
150
oC
ESD (Machine Mode)
200
V
ESD (Human Body Mode)
2000
V
Storage Temperature Range
Lead Temperature (Soldering, 10 Seconds)
TSTG
-65 to 150
o
TLEAD
260
o
C
C
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.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA and the
ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX-TA)/θJA. For the AA4005, TJMAX =
150oC, and the typical junction-to-ambient thermal resistance for TSSOP-20 (EDP) package can be found in the Absolute
Maximum Ratings section.
Note 3: Chip is soldered to 60mm2 (4mm×15mm) copper (top side solder mask) of 1oz. on PCB with 8×0.5mm vias.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Input Voltage
VDD
4.5
5.5
V
TA
-40
85
o
Operating Ambient Temperature Range
Aug. 2008 Rev. 1. 1
C
BCD Semiconductor Manufacturing Limited
5
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Electrical Characteristics
VDD=5.0V, Gain=6dB, TA=25oC, f=1kHz, 22kHz Low pass filter, unless otherwise specified.
Parameter
Quiescent Current
Shutdown Current
SHUTDOWN
Symbol
Conditions
Min
Typ
Max
Unit
IDD
VIN=0, IO=0
6.5
12
mA
ISD
VSHUTDOWN=0
150
300
µA
0.8
V
VIL
2.0
VIH
V
Thermal Shutdown Temperature
165
Hysteresis Temp Window
35
Output Offset Voltage
Output Power
Total Harmonic Distortion Plus
Noise
Signal to Noise Ratio
VIN=0, No load
±5
oC
o
±25
C
mV
THD+N=1%, RL=3Ω,
2.1
W
THD+N=10%, RL=3Ω,
2.7
W
THD+N=1%, RL=4Ω,
1.8
W
THD+N=10%, RL=4Ω,
2.3
W
THD+N=1%, RL=8Ω
1.2
W
THD+N=10%, RL=8Ω
1.5
W
THD+N
PO=1W, RL=4Ω
0.08
%
S/N
PO=1W, RL=4Ω
100
dB
-100
dB
PO
Cross Talk
XTALK
f=1kHz
Power Supply Rejection Ration
PSRR
Cb=1µF, f=1kHz,
Vripple=0.2VRMS
70
dB
Output Noise
VNO
f=20Hz~20kHz, RL=8Ω
18
µVRMS
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
6
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Performance Characteristics
11
9
8
VSHUTDOWN=VDD
Shutdown Current_ISD(µA)
Quiescent Current _IDD (mA)
300
VIN=0
IOUT=0
10
7
6
5
4
3
275
VIN=0
250
IOUT=0
225
VSHUTDOWN=0
200
175
150
125
100
75
2
50
1
25
0
4.5
5.0
5.5
0
4.5
6.0
5.0
6.0
Supply Voltage_VDD(V)
Supply Voltage _VDD (V)
Figure 3. Quiescent Current vs. Supply Voltage
Figure 4. Shutdown Current vs. Supply Voltage
10
10
f=1kHz
RL=4Ω
VDD=5.0V
f=1kHz
RL=4Ω
Gain=6dB
LPF=22kHz
Gain=6dB
LPF=22kHz
(VDD=5.5V)
1
THD+N (%)
THD+N (%)
5.5
(VDD=5.0V)
1
0.1
0.1
10m
100m
1
10m
Output Power (W)
100m
1
Output Power (W)
Figure 6. THD+N vs. Output Power
Figure 5. THD+N vs. Output Power
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
7
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Performance Characteristics (Continued)
10
VDD=5.0V
f=1kHz
RL=8Ω
VDD=5.0V
f=1kHz
RL=3Ω
Gain=6dB
LPF=22kHz
Gain=6dB
LPF=22kHz
THD+N (%)
THD+N (%)
10
1
1
0.1
0.1
10m
100m
1
10m
100m
Output Power (W)
Output Power (W)
Figure 7. THD+N vs. Output Power
Figure 8. THD+N vs. Output Power
10
10
VDD=5.0V
RL=4Ω
VDD=5.0V
f=1kHz
RL=4Ω
Gain=6dB
LPF=30kHz
1
THD+N (%)
THD+N (%)
LPF=22kHz
1
1
Gain=21.6dB
Gain=15.6dB
f=10kHz
f=1kHz
0.1
f=20Hz
Gain=6dB
0.1
Gain=10dB
10m
100m
0.01
10m
1
100m
1
Output Power (W)
Output Power (W)
Figure 9. THD+N vs. Output Power
Figure 10. THD+N vs. Output Power
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
8
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Performance Characteristics (Continued)
10
10
VDD=5.0V
RL=4Ω
Gain=6dB
LPF=30kHz
1
THD+N (%)
THD+N (%)
1
VDD=5.0V
RL=8Ω
PO=0.25W
0.1
Gain=6dB
LPF=30kHz
PO=500mW
PO=250mW
0.1
PO=1W
0.01
PO=1000W
0.01
PO=1.5W
100
1k
10k
100
1k
Frequency (Hz)
Figure 11. THD+N vs. Frequency
Figure 12. THD+N vs. Frequency
10
10
VDD=5.0V
RL=8Ω, PO=1W
Gain=6dB
LPF=30kHz
1
Gain=6dB
LPF=30kHz
LPF=80kHz
THD+N (%)
THD+N (%)
VDD=5.0V
RL=4Ω, PO=1W
1
10k
Frequency (Hz)
LPF=30kHz
0.1
Gain=15.6dB
0.1
Gain=21.6dB
Gain=10dB
Gain=6dB
0.01
0.01
100
1k
100
10k
Frequency (Hz)
1k
10k
Frequency (Hz)
Figure 13. THD+N vs. Frequency
Figure 14. THD+N vs. Frequency
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
9
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Performance Characteristics (Continued)
24
0
Gain0, Gain1=H, H
22
20
RL=8Ω, CIN=1.0µF
Vripple=0.2VRMS
14
12
Input AC Ground
-30
Gain0, Gain1=H, L
16
PSRR (dB)
Gain (dB)
Cb=1.0µF, RL=8Ω
-20
VDD=5.0V
18
VDD=5.0V
-10
Gain0, Gain1=L, H
10
-40
-50
-60
-70
8
Gain0, Gain1=L, L
-80
6
4
100
20
1k
10k
-90
20k
20
Frequency (Hz)
100
1k
10k
20k
Frequency (Hz)
Figure 15. Gain vs. Frequency
Figure 16. PSRR vs. Frequency
0
VDD=5.0V
RL=8Ω, PO=1.0W
-20
Crosstalk (dB)
-40
-60
-80
Right -> Left
-100
-120
Left -> Right
-140
20
100
1k
10k
20k
Frequency (Hz)
Figure 17. Crosstalk vs. Frequency
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
10
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Application
VDD
Cs10µF
1µF
+
6， 15
16
PVDD
VDD
CIN0.47µF
Gain
Control
Left IN-
CIN0.47µF
Left Out+
4
Left Out-
8
Right Out+
18
Right Out-
14
GAIN0
2
GAIN1
3
+
5
AMP1
+
9
-
AMP2
CIN0.47µF
17
Right IN-
CIN0.47µF
+
Gain
Control
AMP3
+
7
Cb1µF
AMP4
10 BYPASS
19 SHUTDOWN
VREF
1, 11, 13, 20
Figure 21. Typical Application of AA4005 for Single-ended input
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Typical Application (Continued)
VDD
1µF
Cs10µF
+
6， 15
16
PVDD
VDD
CIN0.47µF
Gain
Control
Left IN-
CIN0.47µF
Left Out+
4
Left Out-
8
Right Out+
18
Right Out-
14
GAIN0
2
GAIN1
3
+
5
AMP1
+
9
-
Left IN+
AMP2
CIN0.47µF
17
Right IN-
+
Gain
Control
CIN0.47µF
AMP3
+
7
Right IN+
Cb1µF
-
AMP4
10 BYPASS
19 SHUTDOWN
VREF
1, 11, 13, 20
Figure 22. Typical Application of AA4005 for full differential input
Aug. 2008 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
12
Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
Mechanical Dimensions
TSSOP-20(EDP)
Unit: mm(inch)
6.400(0.252)
6.600(0.260)
Ф
3.700(0.146)
MAX
4.300(0.169)
6.200(0.244) 4.500(0.177)
6.600(0.260)
EXPOSED
PAD
2.400(0.094)
MAX
#1 PIN
0.750(0.030) Dp 0.000(0.000)
INDEX
Ф
0.850(0.033)
0.100(0.004)
0.100(0.004)
0.190(0.007)
0.650(0.026)TYP
0.900(0.035)
1.050(0.041)
0.340(0.013)
0.540(0.021)
4-10°
14°
TOP & BOTTOM
0.200(0.008)MIN
R0.090(0.004)MIN
1.200(0.047)
MAX
0.050(0.002) R0.090(0.004)MIN
0.150(0.006)
0.250(0.010)TYP
0°
8°
0.200(0.008)
0.280(0.011)
0.450(0.018)
0.750(0.030)
Aug. 2008 Rev. 1. 1
1.000(0.039)
REF
BCD Semiconductor Manufacturing Limited
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