Tri path Technol og y, I nc. - Techni cal I nformation
TAA2008
STEREO 9W (8Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER USING
DIGITAL POWER PROCESSING™ TECHNOLOGY
TECHNICAL INFORMATION
Revision 1.0 – May 2006
GENERAL DESCRIPTION
The TAA2008 is a 9W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC
using Tripath’s proprietary Digital Power Processing™ technology. The TAA2008, in a QFN package,
along with extremely high efficiency, allows for a very compact amplifier design. Class-T amplifiers
offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.
APPLICATIONS
FEATURES
LCD TV’s
LCD Monitors
Plasma TV’s
Computer/PC Multimedia
Battery Powered Systems
BENEFITS
Fully integrated solution with FETs
Compact packaging and board design
Reduced system cost with no heat sink
Dramatically improves efficiency versus Class-
AB
Signal fidelity equal to high quality linear
amplifiers
High dynamic range compatible with digital
media such as CD, DVD, and Internet audio
Capable of driving a wide range of load
impedances
TYPICAL PERFORMANCE
THD+N versus Output Power
10
VDD = 12V
f = 1kHz
5 A = 12V/V
V
BW = 22Hz - 20kHz(AES17)
2
R
L
=16Ω
1
R
L
=8Ω
R
L
=6Ω
R
L
=4Ω
Class-T architecture
Single Supply Operation
“Audiophile” Quality Sound
0.025% THD+N @ 5W, 8Ω
0.1% IHF-IM @ 1W, 8Ω
6.3W @ 8Ω, 0.1% THD+N
3.5W @ 16Ω, 0.1% THD+N
High Power
14.25W @ 6Ω, 10% THD+N
9W @ 8Ω, 10% THD+N
5W @ 16Ω, 10% THD+N
Extremely High Efficiency
89% @ 5W, 16Ω
86% @ 9W, 8Ω
Dynamic Range = 98.5 dB
Mute and Sleep modes
Improved turn-on & turn-off pop
suppression
Over-current protection with automatic
restart circuit
Over-temperature protection
Space saving 32-pin 8mm x 8mm x 1mm
QFN package with exposed pad
REF
OVRLDB
AGND2
V5A
OAOUT1
INV1
MUTE
N
C
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
AGND1
V5D
DCAP1
DCAP2
5VGEN
CPUMP
PGND1
VDDA
0.5
0.2
0.1
0.05
OAOUT2
INV2
BIASCAP
AGND3
SLEEP
FAULT
PGND2
DGND
THD+N (%)
16
15
14
13
12
11
10
9
0.02
N
C
OUTP1
VDD1
OUTM1
OUTM2
VDD2
OUTP2
N
C
0.01
1
2
3
4
5
6
7
8
9 10
20
Output Power (W)
1
TAA2008 –KLi/1.0/05.06
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
