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TPA321DGN Datasheet

  • TPA321DGN

  • 350-mW MONO AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS

  • 24頁(yè)

  • TI

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TPA321
www.ti.com
SLOS312C 鈥?JUNE 2000 鈥?REVISED JUNE 2004
350-mW MONO AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS
鈥?/div>
鈥?/div>
鈥?/div>
Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility
2.5 V 鈥?5.5 V
Output Power for R
L
= 8
鈩?/div>
鈥?350 mW at V
DD
= 5 V
鈥?250 mW at V
DD
= 3.3 V
Ultralow Supply Current in Shutdown
Mode . . . 0.15 碌A(chǔ)
Thermal and Short-Circuit Protection
Surface-Mount Packaging
鈥?SOIC
鈥?PowerPAD鈩?MSOP
D OR DGN PACKAGE
(TOP VIEW)
鈥?/div>
鈥?/div>
鈥?/div>
SHUTDOWN
BYPASS
IN+
IN-
1
2
3
4
8
7
6
5
V
O
-
GND
V
DD
V
O
+
DESCRIPTION
The TPA321 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 TPA321 can deliver 250 mW of
continuous power into a BTL 8-鈩?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 碌A(chǔ) during shutdown. The
TPA321 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD鈩?MSOP, which
reduces board space by 50% and height by 40%.
V
DD
6
R
F
Audio
Input
R
I
C
I
4
3
IN -
IN+
V
DD
/2
V
O
+ 5
C
S
1
碌F
V
DD
-
+
2
C
B
0.1
碌F
BYPASS
-
+
V
O
-
8
7
350 mW
GND
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2000鈥?004, Texas Instruments Incorporated

TPA321DGN 產(chǎn)品屬性

  • 80

  • 集成電路 (IC)

  • 線性 - 音頻放大器

  • -

  • AB 類

  • 1-通道（單聲道）

  • 700mW x 1 @ 8 歐姆

  • 2.5 V ~ 5.5 V

  • 差分輸入，短路保護(hù)和熱保護(hù)，關(guān)機(jī)

  • 表面貼裝

  • 8-MSOP-PowerPad

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤

  • 管件

  • 296-12306-ND - EVAL MOD FOR TPA321

  • 296-12563-5

TPA321DGN相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
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    廠商
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  • 英文版
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