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SLOS635 – NOVEMBER 2009
3-W STEREO AUDIO POWER AMPLIFIER
WITH ADVANCED DC VOLUME CONTROL
Check for Samples :TPA6013A4
1
FEATURES
•
Advanced 32-Steps DC Volume Control
– Steps from –40 to 18 dB
– Fade Mode
– Maximum Volume Setting for SE Mode
– Adjustable SE Volume Control
Referenced to BTL Volume Control
3 W Into 3-Ω Speakers
Stereo Input MUX
Headphone Mode
Pin-to-pin compatible with TPA6011A4 and
TPA6012A4
24-pin PowerPAD™ Package (PWP)
2
DESCRIPTION
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
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.
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
applied. Finally, to ensure a smooth transition
between active and shutdown modes, a fade mode
ramps the volume up and down.
DC VOLUME CONTROL
Right
Speaker
•
•
•
•
•
APPLICATIONS
•
•
•
Notebook PC
LCD Monitors
Pocket PC
APPLICATION CIRCUIT
1
ROUT+
PGND
SE/BTL
24
23
V
DD
C
C
GAIN (BTL)
vs
VOLUME VOLTAGE
20
10
Volume Up
Volume Down
100 kW
C
S
Power Supply
C
i
C
i
Right HP
Audio Source
Right Line
Audio Source
V
DD
2
3
4
5
ROUT−
HP/LINE
PV
DD
RHPIN
RLINEIN
VOLUME
SEDIFF
SEMAX
22
100 kW
1 kW
0
−10
21
20
19
In From DAC
or
Potentiometer
(DC Voltage)
−20
Gain − dB
Headphones
C
(BYP)
−30
−40
−50
C
i
6
RIN
C
S
7
C
i
8
LIN
C
i
Left Line
Audio Source
Left HP
Audio Source
Power Supply
C
S
9
LLINEIN
C
i
10
V
DD
AGND
BYPASS
18
17
C
C
−60
−70
V
DD
= 5.0 V
BTL Output
R
L
= No Load
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1 kW
−80
−90
Volume [Pin 21] − V
FADE
16
15
14
13
LHPIN SHUTDOWN
11
12
PV
DD
LOUT−
LOUT+
PGND
System Control
Left
Speaker
S001
Figure 1. Application Circuit and DC Volume Control
1
2
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.
PowerPAD is a trademark of Texas Instruments.
Copyright © 2009, Texas Instruments Incorporated
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.
TI [ TEXAS INSTRUMENTS ]
