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TPA731_07

更新时间： 2024-09-21 03:58:47
品牌 Logo 应用领域
德州仪器 - TI 放大器功率放大器低压音频输入元件
页数 文件大小 规格书
25页 724K
描述
700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS

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中文翻译

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TPA731_07 数据手册

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SLOS315B − JUNE 2000 − REVISED OCTOBER 2002  
D OR DGN PACKAGE  
(TOP VIEW)  
D
D
D
Fully Specified for 3.3-V and 5-V Operation  
Wide Power Supply Compatibility  
2.5 V − 5.5 V  
SHUTDOWN  
BYPASS  
IN+  
V −  
O
GND  
1
2
3
4
8
7
6
5
Output Power for R = 8 Ω  
L
− 700 mW at V  
− 250 mW at V  
= 5 V  
DD  
DD  
V
DD  
= 3.3 V  
IN−  
V +  
O
D
Ultralow Supply Current in Shutdown  
Mode . . . 1.5 nA  
D
D
Thermal and Short-Circuit Protection  
Surface-Mount Packaging  
− SOIC  
− PowerPADMSOP  
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-Ω 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 PowerPADMSOP,  
which reduces board space by 50% and height by 40%.  
V
6
5
DD  
V
R
DD  
F
V
DD  
/2  
Audio  
Input  
C
S
R
I
IN −  
IN+  
4
3
V
O
+
−
+
C
I
2
BYPASS  
C
B
700 mW  
−
+
V
O
−
8
7
GND  
SHUTDOWN  
1
Bias  
Control  
From System 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.  
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Copyright 2002, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...25

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