APPLICATIONCIRCUIT

PGND

ROUT−

PV

DD

PV

DD

RHPIN

RLINEIN

RIN

V

DD

V

DD

LIN

LLINEIN

LHPIN

LOUT−

1

ROUT+

SE/BTL

HP/LINE

VOLUME

SEDIFF

SEMAX

AGND

BYPASS

FADE

SHUTDOWN

LOUT+

PGND

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

C

S

C

i

C

i

C

i

C

i

C

i

C

i

C

S

C

S

RightHP

AudioSource

PowerSupply

RightLine

AudioSource

LeftLine

AudioSource

LeftHP

AudioSource

PowerSupply

V

DD

100kW

100kW

C

C

InFromDAC

or

Potentiometer

(DCVoltage)

C

(BYP)

SystemControl

C

C

Right

Speaker

Left

Speaker

Headphones

1kW

1kW

S001

DCVOLUMECONTROL

Volume[Pin21] − V

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

−90

−80

−70

−60

−50

−40

−30

−20

−10

0

10

20

VolumeUp

VolumeDown

V

BTLOutput

R =NoLoad

L

GAIN(BTL)

vs

VOLUMEVOLTAGE

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

The TPA6013A4 is a stereo audio power amplifier

that drives 3 W/channel of continuous RMS power

–

Fade Mode

into a 3-

Ω load. Advanced dc volume control

–

Maximum Volume Setting for SE Mode

minimizes external components and allows BTL

–

Adjustable SE Volume Control

(speaker)

volume

control

and

SE

(headphone)

Referenced to BTL Volume Control

volume control. Notebook and pocket PCs benefit

from

the

integrated

feature

set

that

minimizes

•

3 W Into 3-

Ω Speakers

external components without sacrificing functionality.

•

Stereo Input MUX

To simplify design, the speaker volume level is

•

Headphone Mode

adjusted by applying a dc voltage to the VOLUME

•

Pin-to-pin compatible with TPA6011A4 and

terminal. Likewise, the delta between speaker volume

TPA6012A4

and headphone volume can be adjusted by applying

a dc voltage to the SEDIFF terminal. To avoid an

•

24-pin PowerPAD™ Package (PWP)

unexpected

high

volume

level

through

the

headphones, a third terminal, SEMAX, limits the

APPLICATIONS

headphone volume level when a dc voltage is

•

Notebook PC

applied. Finally, to ensure a smooth transition

•

LCD Monitors

between active and shutdown modes, a fade mode

•

Pocket PC

ramps the volume up and down.

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.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.