TPA3003D2
SLOS406A − FEBRUARY 2003 − REVISED MARCH 2003
3 W STEREO CLASS D 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
D
D
Heatsinks and Reduces Power Supply
Requirements
32-Step DC Volume Control From −40 dB
to 36 dB
Third Generation Modulation Techniques
− Replaces Large LC Filter With Small
Low-Cost Ferrite Bead Filter
Thermal and Short-Circuit Protection
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.
D
APPLICATIONS
D
LCD Monitors and TVs
D
Powered Speakers
PVCC
10 nF
Cbs
10
µF
Cs
0.1
µF
Cs
10
µF
Cs
0.1
µF
Cs
PVCC
10 nF
Cbs
ROUTN
ROUTN
PVCCR
PVCCR
PVCCR
PGNDR
PGNDR
ROUTP
ROUTP
PVCCR
BSRN
BSRP
Ccpr
NC
MUTE
AVCC
NC
NC
1
µF
MUTE CONTROL
AVCC
Cs
0.1
µF
Cvcc
10
µF
SYSTEM CONTROL
RINN
RINP
Crinn
Crinp 1
µF
1
µF
C2p5
SD
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
AGND
AGND
VCLAMPR
LINP
LINN
Clinp 1
µF
1
µF
Clinn
1
µF
TPA3003D2
FADE
AVDD
COSC
ROSC
AGND
VCLAMPL
AVDD
Cosc
220 pF
Cvdd
100 nF
Rosc
120 kΩ
SYSTEM CONTROL
VOLUME
VOLUME
REFGND
PGNDL
PGNDL
LOUTN
LOUTN
LOUTP
LOUTP
PVCCL
PVCCL
PVCCL
PVCCL
BSLN
Ccpl
1
µF
Cs
Cbs
10 nF
PVCC
0.1
µF
Cs
10
µF
Cs
0.1
µF
Cs
10
µF
Cbs
10 nF
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.
BSLP
Copyright
2003, Texas Instruments Incorporated
www.ti.com
1
TI [ TEXAS INSTRUMENTS ]
