TPA3004D2_15 Datasheet, PDF (1/47 Pages) Texas Instruments – 12-W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL

TPA3004D2
www.ti.com
SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011
12-W STEREO CLASS-D AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
Check for Samples: TPA3004D2
FEATURES
1
•2 12-W/Ch Into an 8-Ω Load From 15-V Supply
• Efficient, Class-D Operation Eliminates
Heatsinks and Reduces Power Supply
Requirements
• 32-Step DC Volume Control From -40 dB to
36 dB
• Line Outputs For External Headphone
Amplifier With Volume Control
• Regulated 5-V Supply Output for Powering
TPA6110A2
• Space-Saving, Thermally-Enhanced
PowerPAD™ Packaging
• Thermal and Short-Circuit Protection
APPLICATIONS
• LCD Monitors and TVs
• Powered Speakers
DESCRIPTION
The TPA3004D2 is a 12-W (per channel) efficient,
Class-D audio amplifier for driving bridged-tied stereo
speakers. The TPA3004D2 can drive stereo speakers
as low as 4 Ω. The high efficiency of the TPA3004D2
eliminates the need for external heatsinks when
playing music.
Stereo speaker volume is controlled with a dc voltage
applied to the volume control terminal offering a
range of gain from -40 dB to 36 dB. Line outputs, for
driving external headphone amplifier inputs, are also
dc voltage controlled with a range of gain from -56 dB
to 20 dB.
An integrated 5-V regulated supply is provided for
powering an external headphone amplifier.
PVCC 10 µF
10 nF
Cbs
Cs
0.1 µF
Cs
10 µF PVCC
Cs
0.1 µF
Cs
10 nF
Cbs
SYSTEM CONTROL
RINN
RINP
LINP
LINN
VOL
Crinn
Crinp _{1 µF}
1 µF ^C2p5
Clinp _{1 µF}
1 µF ^Clinn
1 µF
VARDIFF
VARMAX
SD
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
VARDIFF
VARMAX
VOLUME
REFGND
TPA3004D2
VCLAMPR
MODE_OUT
MODE
AVCC
VAROUTR
VAROUTL
FADE
AVDD
COSC
ROSC
AGND
VCLAMPL
Cs
Cbs
10 nF
0.1 µF
Cs
PVCC ^{10 µF}
Cs
0.1 µF
Cs
Cbs
10 nF
10 µF _PVCC
Ccpr
1 µF
AVDD
Cosc
220 pF
Ccpl
Cvdd
100 nF
Rosc
120 kΩ
1 µF
10
kΩ
10
kΩ
MODE_OUT
SYSTEM CONTROL
AVCC
RLINE_OUT
Cs
0.1 µF
LLINE_OUT
SYSTEM CONTROL
Cvcc
10 µF
1
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.
2
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 © 2003–2011, Texas Instruments Incorporated