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TPA6013A4_16

更新时间： 2024-11-19 02:58:15
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德州仪器 - TI 放大器功率放大器
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28页 643K
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3-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL

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TPA6013A4  
www.ti.com  
SLOS635 –NOVEMBER 2009  
3-W STEREO AUDIO POWER AMPLIFIER  
WITH ADVANCED DC VOLUME CONTROL  
Check for Samples :TPA6013A4  
1
FEATURES  
DESCRIPTION  
2
•
Advanced 32-Steps DC Volume Control  
–
–
–
–
Steps from –40 to 18 dB  
Fade Mode  
The TPA6013A4 is a stereo audio power amplifier  
that drives 3 W/channel of continuous RMS power  
into  
a 3-Ω load. Advanced dc volume control  
Maximum Volume Setting for SE Mode  
minimizes external components and allows BTL  
(speaker) volume control and SE (headphone)  
volume control. Notebook and pocket PCs benefit  
from the integrated feature set that minimizes  
external components without sacrificing functionality.  
Adjustable SE Volume Control  
Referenced to BTL Volume Control  
•
•
•
•
3 W Into 3-Ω Speakers  
Stereo Input MUX  
Headphone Mode  
To simplify design, the speaker volume level is  
adjusted by applying a dc voltage to the VOLUME  
terminal. Likewise, the delta between speaker volume  
and headphone volume can be adjusted by applying  
a dc voltage to the SEDIFF terminal. To avoid an  
unexpected high volume level through the  
headphones, a third terminal, SEMAX, limits the  
headphone volume level when a dc voltage is  
Pin-to-pin compatible with TPA6011A4 and  
TPA6012A4  
•
24-pin PowerPAD™ Package (PWP)  
APPLICATIONS  
•
•
•
Notebook PC  
LCD Monitors  
Pocket PC  
applied. Finally, to ensure  
a smooth transition  
between active and shutdown modes, a fade mode  
ramps the volume up and down.  
APPLICATION CIRCUIT  
DC VOLUME CONTROL  
GAIN (BTL)  
vs  
VOLUME VOLTAGE  
Right  
Speaker  
VDD  
24  
23  
CC  
ROUT+  
SE/BTL  
1
PGND  
20  
100 kW  
100 kW  
Volume Up  
Volume Down  
2
10  
CS  
ROUT−  
22  
0
−10  
−20  
−30  
−40  
−50  
−60  
HP/LINE  
3
1 kW  
PVDD  
Power Supply  
Right HP  
Ci  
4
5
6
21  
20  
RHPIN  
RLINEIN  
RIN  
VOLUME  
SEDIFF  
SEMAX  
Audio Source  
Ci  
In From DAC  
or  
Potentiometer  
(DC Voltage)  
Right Line  
Audio Source  
Ci  
19  
VDD  
CS  
Headphones  
7
8
18  
17  
VDD  
LIN  
AGND  
C(BYP)  
Ci  
−70  
−80  
−90  
VDD = 5.0 V  
BYPASS  
BTL Output  
RL = No Load  
1 kW  
Ci  
CC  
9
16  
15  
Left Line  
Audio Source  
LLINEIN  
LHPIN  
FADE  
0.0  
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
Ci  
10  
Volume [Pin 21] − V  
Left HP  
Audio Source  
System Control  
SHUTDOWN  
11  
12  
14  
13  
PVDD  
Power Supply  
Left  
Speaker  
LOUT+  
PGND  
CS  
LOUT−  
S001  
Figure 1. Application Circuit and DC Volume Control  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
PowerPAD is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
 
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