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TPA731

700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER

WITH DIFFERENTIAL INPUTS

SLOS315B 鈥?JUNE 2000 鈥?REVISED OCTOBER 2002

D

Fully Specified for 3.3-V and 5-V Operation

D

Wide Power Supply Compatibility

D

2.5 V 鈥?5.5 V

Output Power for R

L

= 8

鈩?/div>

鈥?700 mW at V

DD

= 5 V

鈥?250 mW at V

DD

= 3.3 V

Ultralow Supply Current in Shutdown

Mode . . . 1.5 nA

Thermal and Short-Circuit Protection

Surface-Mount Packaging

鈥?SOIC

鈥?PowerPAD錚?MSOP

D OR DGN PACKAGE

(TOP VIEW)

SHUTDOWN

BYPASS

IN+

IN鈥?/div>

1

2

3

4

8

7

6

5

V

O

鈥?/div>

GND

V

DD

V

O

+

description

The TPA731 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 TPA731 can deliver 250-mW of

continuous power into a BTL 8-鈩?load at less than 0.6% THD+N throughout voice band frequencies. Although

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

wireless 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 supply current of 1.5 nA during shutdown.

The TPA731 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD錚?MSOP,

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

VDD 6

RF

Audio

Input

RI

CI

4

3

IN 鈥?/div>

IN+

VDD/2

VO+ 5

CS

鈥?/div>

+

VDD

2

CB

BYPASS

鈥?/div>

+

VO鈥?8

7

GND

700 mW

From System Control

1

SHUTDOWN

Bias

Control

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.

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.

Copyright

錚?/div>

2002, Texas Instruments Incorporated

POST OFFICE BOX 655303

鈥?/div>

DALLAS, TEXAS 75265

1

標(biāo)準(zhǔn)包裝
80
類別
集成電路 (IC)
家庭
線性 - 音頻放大器
系列
-
類型
AB 類
輸出類型
1-通道（單聲道）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量
700mW x 1 @ 8 歐姆
電源電壓
2.5 V ~ 5.5 V
特點(diǎn)
差分輸入，短路保護(hù)和熱保護(hù)，關(guān)機(jī)
安裝類型
表面貼裝
供應(yīng)商設(shè)備封裝
8-MSOP-PowerPad
封裝/外殼
8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤
包裝
管件
配用
296-10853-ND - EVAL MOD FOR TPA731

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