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FEATURES

APPLICATIONS

DESCRIPTION

Shutdown

Control

C1P

C1N

OUTR

OUTL

SDR

INL

INR

SDL

1.8 − 4.5 V

TPA4411

TPA2012D2

TLV320AIC26

or

TLV320AIC28

HPL

or

SPK1

HPR

or

SPK2

PGND

SGND

TPA4411

SLOS430 – AUGUST 2004

80-mW CAPLESS STEREO HEADPHONE DRIVER

•

Ground-Referenced Outputs Eliminate

•

Notebook Computers

DC-Bias Voltages on Headphone Ground Pin

•

CD / MP3 Players

– No Output DC-Blocking Capacitors

•

Smart Phones

• Reduced Board Area

•

Cellular Phones

• Reduced Component Cost

•

PDAs

• Improved THD+N Performance

•

No Degradation of Low-Frequency

Response Due to Output Capacitors

The TPA4411 is a stereo headphone driver designed

•

Wide Power Supply Range: 1.8 V to 4.5 V

to allow the removal of the output dc-blocking capaci-

•

80-mW/Ch Output Power into 16-

Ω at 4.5 V

tors for reduced component count and cost. The

TPA4411 is ideal for small portable electronics where

•

Independent Right and Left Channel

size and cost are critical design parameters.

Shutdown Control

•

Short-Circuit and Thermal Protection

The TPA4411 is capable of driving 80 mW into a

16-

Ω load at 4.5 V. The TPA4411 has a fixed gain of

•

Pop Reduction Circuitry

-1.5 V/V and headphone outputs have

±8-kV IEC

•

Space Saving Pb-Free Packages

ESD protection. The TPA4411 has independent shut-

– 20-pin, 4 mm

× 4 mm ThinQFN

down control for the right and left audio channels.

– 16-ball, 2 mm

× 2 mm WCSP

The TPA4411 is available in a 20-pin, 4 mm

× 4 mm

(Product Preview)

ThinQFN package.

.

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.

UNLESS OTHERWISE NOTED this document contains PRO-

Copyright © 2004, Texas Instruments Incorporated

DUCTION DATA information current as of publication date. Prod-

ucts conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily

include testing of all parameters.