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TPA3002D2 View Datasheet(PDF) - Texas Instruments

Part NameTPA3002D2 TI
Texas Instruments TI
Description9-W STEREO CLASS-D AUDIO POWER AMPLFIER WITH DC VOLUME CONTROL
TPA3002D2 Datasheet PDF : 41 Pages
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www.ti.com
TPA3002D2
SLOS402C − DECEMBER 2002 − REVISED JANUARY 2004
CLOSED LOOP RESPONSE
100
100
50
Gain
50
0
0
Phase
−50
−50
−100
−100
−150
−200
−250
10
VCC = 12 V,
Gain = +36 dB,
RL = 8
Class-D
100
1k
10 k
f − Frequency − Hz
Figure 13
100 k
−150
−200
−250
1M
INTERMODULATION PERFORMANCE
0
VCC = 12 V, 19 kHz, 20 kHz,
−20
1:1, PO = 1 W, RL = 8
Gain = +13.2 dB,
BW =20 Hz to 22 kHz,
−40
Class-D
No Filter
−60
−80
−100
−120
−140
50 100
1k
10 k
f − Frequency − Hz
Figure 14
INPUT OFFSET VOLTAGE
vs
COMMON-MODE INPUT VOLTAGE
6
VCC = 12 V
Class-D
5
4
3
2
1
0
−1
0
1
2
3
4
5
VICM − Common-Mode Input Voltage − V
Figure 15
CROSSTALK
vs
FREQUENCY
0
VCC = 12 V,
−10 C2P5 = 1 µF,
PO = 1 W,
−20 Gain = +13.2 dB,
Class-D,
−30 RL = 8
−40
−50
−60
−70
−80
−90
20
100
1k
f − Frequency − Hz
Figure 16
10 k 20 k
13
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DESCRIPTION
The TPA3002D2 is a 9-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo speakers. The TPA3002D2 can drive stereo speakers as low as 8 Ω. The high efficiency of the TPA3002D2 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.

FEATURES
● 9-W/Ch Into an 8-Ω Load From 12-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

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