TPA3003D2 Datasheet, PDF (1/33 Pages) Texas Instruments – 3-W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL

TPA3003D2
SLOS406A − FEBRUARY 2003 − REVISED MARCH 2003
3ĆW STEREO CLASSĆD AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
FEATURES
D 3-W/Ch Into an 8-Ω Load From 12-V Supply
D Efficient, Class-D Operation Eliminates
Heatsinks and Reduces Power Supply
Requirements
D 32-Step DC Volume Control From −40 dB
to 36 dB
D Third Generation Modulation Techniques
− Replaces Large LC Filter With Small
Low-Cost Ferrite Bead Filter
D Thermal and Short-Circuit Protection
APPLICATIONS
D LCD Monitors and TVs
D Powered Speakers
DESCRIPTION
The TPA3003D2 is a 3-W (per channel) efficient,
Class-D audio amplifier for driving bridged-tied stereo
speakers. The TPA3003D2 can drive stereo speakers
as low as 8 Ω. The high efficiency of the TPA3003D2
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.
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
VOLUME
Crinn
Crinp _{1 µF}
1 µF ^C2p5
Clinp _{1 µF}
1 µF ^Clinn
1 µF
SD
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
AGND
AGND
VOLUME
REFGND
TPA3003D2
VCLAMPR
NC
MUTE
AVCC
NC
NC
FADE
AVDD
COSC
ROSC
AGND
VCLAMPL
Ccpr
1 µF
AVDD
Cosc
220 pF
Ccpl
Cvdd
100 nF
Rosc
120 kΩ
1 µF
MUTE CONTROL
AVCC
Cs
0.1 µF
Cvcc
10 µF
SYSTEM CONTROL
Cs
Cbs
10 nF
0.1 µF
Cs
PVCC ^{10 µF}
Cs
0.1 µF
Cs
Cbs
10 nF
10 µF _PVCC
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2003, Texas Instruments Incorporated
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