AA4005G - BCD Semiconductor

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

General Description

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.

Features

·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: 3.0V to 5.5V

·4 Selectable Internal Fixed Gain Setups

·Stereo Full Differential Input

·Low Power Consumption at Shutdown Mode

100µA Typical

·Excellent Click/POP Noise Suppression

·Thermal Shutdown Protection

Applications

·Notebook PC

·Portable Media Player

Figure 1. Package Type of AA4005

TSSOP-20（EDP）

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Figure 2. Pin Configuration of AA4005 (Top View)

Pin Configuration

10 11

20GND

GAIN0

GAIN1

OUTL+

LIN-

PVDD

RIN+

OUTL-

LIN+

BYPASS

GND

SHUTDOWN

OUTR+

RIN-

VDD

PVDD

OUTR-

GND

G Package

(TSSOP-20(EDP))

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

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- Left channel negative input

6, 15 PVDD Power supply for output stage

7RIN+

Right channel positive input for differential input, AC ground for Single-ended

input.

8 OUTL- Left channel negative output

9LIN+

Left channel positive input for differential input, AC ground for Single-ended

input

10 BYPASS Internal reference voltage pin, connect a 1.0µF ceramic capacitor to GND

12 NC No connected

14 OUTR- Right channel negative output

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

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

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

Circuit Type

Package

AA4005

TR: Tape and Reel

G: TSSOP-20(EDP）

E1: Lead Free

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Package Temperature Range

Part Number Marking ID

Packing Type

Lead Free Lead Free

TSSOP-20(EDP) -40 to 85oCAA4005GTR-E1 AA4005G Tape and Reel

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

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) PDInternally limited

Thermal Resistance θJA 35 (Note 3) oC/W

Operating Junction Temperature TJ150 oC

ESD (Machine Mode) 200 V

ESD (Human Body Mode) 2000 V

Storage Temperature Range TSTG -65 to 150 oC

Lead Temperature (Soldering, 10 Seconds) TLEAD 260 oC

Absolute Maximum Ratings (Note 1)

Parameter Symbol Min Max Unit

Input Voltage VDD 3.0 5.5 V

Operating Ambient Temperature Range TA -40 85 oC

Recommended Operating Conditions

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.

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Electrical Characteristics

Parameter Symbol Conditions Min Typ Max Unit

Quiescent Current IDD VIN=0, IO=0 6.5 12 mA

Shutdown Current ISD VSHUTDOWN=0 100 200 µA

SHUTDOWN

VIL 0.8 V

VIH 2.0 V

Thermal Shutdown Temperature 165 oC

Hysteresis Temp Window 35 oC

Output Offset Voltage VIN=0, No load ±5±25 mV

Output Power PO

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=8Ω1.2 W

THD+N=10%, RL=8W 1.5 W

Total Harmonic Distortion Plus

Noise THD+N PO=1W, RL=4W 0.08 %

Signal to Noise Ratio S/N PO=1W, RL=4Ω100 dB

Cross Talk XTALK f=1kHz -100 dB

Power Supply Rejection Ration PSRR Cb=1mF, f=1kHz,

Vripple=0.2VRMS

70 dB

Output Noise VNO f=20Hz~20kHz, RL=8Ω18 µVRMS

VDD=5.0V, Gain=6dB, TA=25oC, f=1kHz, 22kHz Low pass filter, unless otherwise specified.

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Typical Performance Characteristics

Figure 4. Shutdown Current vs. Supply Voltage

Figure 5. THD+N vs. Output Power Figure 6. THD+N vs. Output Power

3.0 3.5 4.0 4.5 5.0 5.5 6.0

100

120

140

160

180

200

Supply Voltage_VDD (V)

VIN=0

IOUT=0

VSHUTDOWN=0

Shutdown Current_ISD (µA)

3.0 3.5 4.0 4.5 5.0 5.5 6.0

Supply Voltage _VDD (V)

VIN=0

IOUT=0

VSHUTDOWN=VDD

Quiescent Current _IDD (mA)

10m 100m 1

0.1

(VDD=5.5V)

(VDD=5.0V)

(VDD=3.6V)

(VDD=3.3V)

(VDD=3.0V)

Output Power (W)

f=1kHz

RL=4Ω

Gain=6dB

LPF=22kHz

THD+N (%)

10m 100m 1

0.1

Output Power (W)

VDD=3.0V

f=1kHz

RL=4Ω

Gain=6dB

LPF=22kHz

THD+N (%)

Figure 3. Quiescent Current vs. Supply Voltage

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Figure 7. THD+N vs. Output Power

Figure 9. THD+N vs. Output Power

Typical Performance Characteristics (Continued)

Figure 8. THD+N vs. Output Power

Figure 10. THD+N vs. Output Power

10m 100m 1

0.1

Output Power (W)

VDD=3.0V

f=1kHz

RL=3Ω

Gain=6dB

LPF=22kHz

THD+N (%)

10m 100m 1

0.1

Output Power (W)

VDD=3.0V

f=1kHz

RL=8Ω

Gain=6dB

LPF=22kHz

THD+N (%)

10m 100m 1

0.1

Output Power (W)

VDD=5.0V

f=1kHz

RL=4Ω

Gain=6dB

LPF=22kHz

THD+N (%)

10m 100m 1

0.1

Output Power (W)

VDD=5.0V

f=1kHz

RL=8Ω

Gain=6dB

LPF=22kHz

THD+N (%)

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Figure 11.

THD+N vs. Output Power

Typical Performance Characteristics (Continued)

Figure 12.

THD+N vs. Output Power

Figure 1

. THD+N vs. Output Power Figure 14. THD+N vs. Frequency

10m 100m 1

0.1

Output Power (W)

VDD=5.0V

f=1kHz

RL=3Ω

Gain=6dB

LPF=22kHz

THD+N (%)

10m 100m 1

0.01

0.1

f=10kHz

f=20Hz

Output Power (W)

VDD=5.0V

RL=4Ω

Gain=6dB

LPF=30kHz

THD+N (%)

f=1kHz

10m 100m 1

0.1

Gain=10dB

Gain=15.6dB

Gain=21.6dB

Gain=6dB

Output Power (W)

VDD=5.0V

f=1kHz

RL=4Ω

LPF=22kHz

THD+N (%)

100 1k 10k

0.01

0.1

Frequency (Hz)

VDD=5.0V

RL=4Ω

Gain=6dB

LPF=30kHz

THD+N (%)

PO=1.5W

PO=1W

PO=0.25W

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics (Continued)

Figure 17. THD+N vs. Frequency

Figure 15. THD+N vs. Frequency Figure 16. THD+N vs. Frequency

Figure 18. Gain vs. Frequency

100 1k 10k

0.01

0.1

LPF=80kHz

LPF=30kHz

Frequency (Hz)

VDD=5.0V

RL=4Ω, PO=1W

Gain=6dB

LPF=30kHz

THD+N (%)

100 1k 10k

0.01

0.1

Frequency (Hz)

VDD=5.0V

RL=8Ω

Gain=6dB

LPF=30kHz

THD+N (%)

PO=1000W

PO=500mW

PO=250mW

100 1k 10k

Gain (dB)

Frequency (Hz)

VDD=5.0V

RL=8Ω, CIN=1.0µF

20k

Gain0, Gain1=H, H

Gain0, Gain1=H, L

Gain0, Gain1=L, H

Gain0, Gain1=L, L

100 1k 10k

0.01

0.1

Gain=10dB

Frequency (Hz)

VDD=5.0V

RL=8Ω, PO=1W

Gain=6dB

LPF=30kHz

THD+N (%)

Gain=6dB

Gain=15.6dB

Gain=21.6dB

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

100 1k 10k

-90

-80

-70

-60

-50

-40

-30

-20

-10

PSRR (dB)

Frequency (Hz)

VDD=5.0V

Cb=1.0µF, RL=8Ω

Vripple=0.2VRMS

Input AC Ground

20k

Typical Performance Characteristics (Continued)

Figure 19. PSRR vs. Frequency

Figure 20.

Crosstalk vs. Frequency

100 1k 10k

-140

-120

-100

-80

-60

-40

-20

Right -> Left

Crosstalk (dB)

Frequency (Hz)

VDD=5.0V

RL=8Ω, PO=1.0W

20k

Left -> Right

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Typical Application

Figure 2

. Typical Application of AA4005 for Single-ended input

AMP1

AMP2

Gain

Control

AMP3

AMP4

Gain

Control

Left IN-

CIN0.47µF

Right IN-

VREF

Cs10µF

1µF

VDD

PVDD

Cb1µFBYPASS

SHUTDOWN19

6， 15 16

Left Out+

Left Out-

Right Out+

Right Out-

GAIN0

GAIN1

1, 11, 13, 20

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Typical Application (Continued)

Figure 22. Typical Application of AA4005 for full differential input

AMP1

AMP2

Gain

Control

AMP3

AMP4

Gain

Control

Left IN-

CIN0.47µF

Right IN-

VREF

Cs10µF1µF

VDD

PVDD

Cb1µF

BYPASS

SHUTDOWN19

6， 15 16

Left Out+

Left Out-

Right Out+

Right Out-

GAIN0

GAIN1

1, 11, 13, 20

Left IN+

Right IN+

2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005

Preliminary Datasheet

Apr. 2008 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Mechanical Dimensions

TSSOP-20(EDP) Unit: mm(inch)

0.650(0.026)TYP

6.200(0.244)

6.600(0.260)

#1 PIN

6.400(0.252)

6.600(0.260)

INDEX

0.750(0.030)

0.850(0.033)Dp

0.000(0.000)

0.100(0.004)

2.900(0.114)

3.100(0.122)

4.100(0.161)

4.300(0.169)

0.200(0.008)

0.280(0.011)

0.050(0.002)

0.150(0.006)

0.900(0.035)

1.050(0.041)

1.200(0.047)

MAX

0.340(0.013)

0.540(0.021)

10°

14°

0.250(0.010)TYP

0.450(0.018)

0.750(0.030) 1.000(0.039)

REF

0°

8°

R0.090(0.004)MIN

TOP & BOTTOM

0.200(0.008)MIN

4.300(0.169)

4.500(0.177)

0.100(0.004)

0.190(0.007)

EXPOSED PAD

IMPORTANT NOTICE

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility fo r use of any its products for any

particular purpose, nor does BCD Semiconductor Man ufacturing 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.

- Wafer Fab

Shanghai SIM-BCD Semiconductor Manufacturing Limited

800, Yi Shan Road, Shanghai 200233, China

Tel: +86-21-6485 1491, Fax: +86-21-5450 0008

BCD Semiconductor Manufacturing Limited

MAIN SITE

REGIONAL SALES OFFICE

Shenzhen Office

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office

Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office

Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China

Tel: +86-755-8826 7951

Fax: +86-755-8826 7865

Taiwan Office

BCD Semiconductor (Taiwan) Company Limited

4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,

Taiwan

Tel: +886-2-2656 2808

Fax: +886-2-2656 2806

USA Office

BCD Semiconductor Corporation

30920 Huntwood Ave. Hayward,

CA 94544, U.S.A

Tel : +1-510-324-2988

Fax: +1-510-324-2788

- IC Design Group

Advanced Analog Circuits (Shanghai) Corporation

8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China

Tel: +86-21-6495 9539, Fax: +86-21-6485 9673

BCD Semiconductor Manufacturing Limited

http://www.bcdsemi.com

BCD Semiconductor Manufacturing Limited

IMPORTANT NOTICE

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

cations 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.

- Wafer Fab

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

800 Yi Shan Road, Shanghai 200233, China

Tel: +86-21-6485 1491, Fax: +86-21-5450 0008

MAIN SITE

REGIONAL SALES OFFICE

Shenzhen Office

Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office

Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen,

518026, China

Tel: +86-755-8826 7951

Fax: +86-755-8826 7865

Taiwan Office

BCD Semiconductor (Taiwan) Company Limited

4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,

Taiwan

Tel: +886-2-2656 2808

Fax: +886-2-2656 2806

USA Office

BCD Semiconductor Corp.

30920 Huntwood Ave. Hayward,

CA 94544, USA

Tel : +1-510-324-2988

Fax: +1-510-324-2788

- Headquarters

BCD Semiconductor Manufacturing Limited

No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China

Tel: +86-21-24162266, Fax: +86-21-24162277