TPA302_07 Datasheet, PDF (1/22 Pages) Texas Instruments – 300-mW STEREO AUDIO POWER AMPLIFIER

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TPA302
SLOS174C – JANUARY 1997 – REVISED JUNE 2004
300-mW STEREO AUDIO POWER AMPLIFIER
• 300-mW Stereo Output
• PC Power Supply Compatibility 5-V and
3.3-V Specified Operation
• Shutdown Control
• Internal Midrail Generation
• Thermal and Short-Circuit Protection
• Surface-Mount Packaging
• Functional Equivalent of the LM4880
V_O1
SHUTDOWN
BYPASS
IN2
D PACKAGE
(TOP VIEW)
1
8
2
7
3
6
4
5
IN1
GND
V_DD
V_O2
DESCRIPTION
The TPA302 is a stereo audio power amplifier capable of delivering 250 mW of continuous average power into
an 8-Ω load at less than 0.06% THD+N from a 5-V power supply or up to 300 mW at 1% THD+N. The TPA302
has high current outputs for driving small unpowered speakers at 8 Ω or headphones at 32 Ω. For headphone
applications driving 32-Ω loads, the TPA302 delivers 60 mW of continuous average power at less than 0.06%
THD+N. The amplifier features a shutdown function for power-sensitive applications as well as internal thermal
and short-circuit protection. The amplifier is available in an 8-pin SOIC (D) package that reduces board space
and facilitates automated assembly.
TYPICAL APPLICATION CIRCUIT
Audio
Input
R_I
C_I
Audio
Input
C_B
R_I
C_I
R_F
8 ^{IN 1}
3 ^BYPASS
4 ^{IN 2}
2 ^SHUTDOWN
V_DD/2
−
+
V_DD 6
V_O1 1
−
V_O2 5
+
Bias
7
Control
R_F
V_DD
C_S
C_C
C_C
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.
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 © 1997–2004, Texas Instruments Incorporated