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TPA321DGNG4 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPA321DGNG4
Description  350-mW MONO AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS
Download  26 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPA321DGNG4 Fiches technique(HTML) 1 Page - Texas Instruments

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1
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3
4
8
7
6
5
SHUTDOWN
BYPASS
IN+
IN-
VO-
GND
VDD
VO+
D OR DGN PACKAGE
(TOP VIEW)
DESCRIPTION
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+
-
+
-
+
TPA321
SLOS312C – JUNE 2000 – REVISED JUNE 2004
350-mW MONO AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS
Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility
2.5 V – 5.5 V
Output Power for RL = 8 Ω
– 350 mW at VDD = 5 V
– 250 mW at VDD = 3.3 V
Ultralow Supply Current in Shutdown
Mode . . . 0.15 µA
Thermal and Short-Circuit Protection
Surface-Mount Packaging
– SOIC
– PowerPAD™ MSOP
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-
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
TPA321 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%.
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.
Copyright © 2000–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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