TPA301

350-mW MONO AUDIO POWER AMPLIFIER

SLOS208C – JANUARY1998 – REVISED MARCH 2000

1

POST OFFICE BOX 655303

2.5 V – 5.5 V

Mode . . . 0.15

µA

– SOIC

– PowerPAD

™ MSOP

description

The TPA301 is a bridge-tied load (BTL) audio power amplifier developed especially for low-voltage applications

where internal speakers are required. Operating with a 3.3-V supply, the TPA301 can deliver 250-mW of

continuous power into a BTL 8-

Ω load at less than 1% THD+N throughout voice band frequencies. Although

this device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as

cellular communications. The BTL configuration eliminates the need for external coupling capacitors on the

output in most applications, which is particularly important for small battery-powered equipment. This device

features a shutdown mode for power-sensitive applications with a quiescent current of 0.15

µA during shutdown.

The TPA301 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD MSOP,

which reduces board space by 50% and height by 40%.

Audio

Input

Bias

Control

VDD

350 mW

6

5

7

VO+

VDD

1

2

4

BYPASS

IN –

VDD/2

CI

RI

CS

1

µF

CB

0.1

µF

RF

SHUTDOWN

VO–8

GND

From System Control

3

IN+

–

+

–

+

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.

Copyright

© 2000, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

1

2

3

4

8

7

6

5

SHUTDOWN

BYPASS

IN+

IN–

GND

D OR DGN PACKAGE

(TOP VIEW)

PowerPAD is a trademark of Texas Instruments.