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TPA122

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS211C 鈥?AUGUST1998 鈥?REVISED MARCH 2000

D

150 mW Stereo Output

PC Power Supply Compatible

鈥?Fully Specified for 3.3 V and 5 V

Operation

鈥?Operation to 2.5 V

Pop Reduction Circuitry

Internal Mid-Rail Generation

Thermal and Short-Circuit Protection

Surface-Mount Packaging

鈥?PowerPAD鈩?MSOP

鈥?SOIC

Pin Compatible With LM4880 and LM4881

(SOIC)

D OR DGN PACKAGE

(TOP VIEW)

V

O

1

IN 鈥?/div>

BYPASS

GND

1

2

3

4

8

7

6

5

V

DD

V

O

2

IN2 鈥?/div>

SHUTDOWN

description

The TPA122 is a stereo audio power amplifier packaged in either an 8-pin SOIC, or an 8-pin PowerPAD鈩?MSOP

package capable of delivering 150 mW of continuous RMS power per channel into 8-鈩?loads. Amplifier gain

is externally configured by means of two resistors per input channel and does not require external compensation

for settings of 1 to 10.

THD+N when driving an 8-鈩?load from 5 V is 0.1% at 1 kHz, and less than 2% across the audio band of 20 Hz

to 20 kHz. For 32-鈩?loads, the THD+N is reduced to less than 0.06% at 1 kHz, and is less than 1% across the

audio band of 20 Hz to 20 kHz. For 10-k鈩?loads, the THD+N performance is 0.01% at 1 kHz, and less than 0.02%

across the audio band of 20 Hz to 20 kHz.

typical application circuit

RF

Audio

Input

RI

CI

3

Audio

Input

RI

CI

From Shutdown

Control Circuit

RF

5

CB

6

IN 2鈥?/div>

2

IN 1鈥?/div>

320 k鈩?/div>

VDD 8

CS

VDD

VDD/2

鈥?/div>

+

VO1 1

CC

BYPASS

鈥?/div>

+

SHUTDOWN

VO2 7

CC

Bias

Control

4

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

漏

2000, 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
耳機(jī)，2-通道（立體聲）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量
70mW x 2 @ 8 歐姆
電源電壓
2.5 V ~ 5.5 V
特點(diǎn)
消除爆音，短路保護(hù)和熱保護(hù)，關(guān)閉
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
296-10824-ND - EVAL MOD AUDIO PWR FOR TPA122
其它名稱
296-1943296-1943-5

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