TAA2009 Datasheet, PDF (1/19 Pages) Tripath Technology Inc. – STEREO 9W (8Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER USING DIGITAL POWER PROCESSING™ TECHNOLOGY

Tripath Technology, Inc. - Technical Information
TA A 2 0 0 9
STEREO 9W (8Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER USING
DIGITAL POWER PROCESSING™ TECHNOLOGY
TECHNICAL INFORMATION
Revision 1.02 – May 2006
GENERAL DESCRIPTION
The TAA2009 is a 9W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC
using Tripath’s proprietary Digital Power Processing™ technology. The TAA2009, 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
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
Differential inputs minimize common-mode
noise
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
Sophisticated pop reduction circuit
TYPICAL PERFORMANCE
THD+N versus Output Power
10 _{VDD = 12V}
5
f = 1kHz
Gain1=0, Gain0=1
BW = 22Hz - 20kHz(AES17)
2
1
0.5
0.2
0.1
0.05
R_L = 16Ω
R_L = 8Ω
R_L = 4Ω
R_L = 6Ω
FEATURES
Class-T architecture
Single Supply Operation
“Audiophile” Quality Sound
0.05% THD+N @ 5W, 8Ω
0.16% IHF-IM @ 1W, 8Ω
6.4W @ 8Ω, 0.1% THD+N
3.5W @ 16Ω, 0.1% THD+N
High Power
10.6W @ 6Ω, 10% THD+N
9W @ 8Ω, 10% THD+N
5W @ 16Ω, 10% THD+N
Extremely High Efficiency
90% @ 5W, 16Ω
86% @ 9W, 8Ω
Dynamic Range = 96 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
Filterless Operation Option
32-pin QFN
(Top View)
IN1P
1
V5D
2
GAIN0
3
DGND
4
REF
5
SLEEP
6
MUTE
7
FAULT
8
24
IN2P
23
AGND
22
GAIN1
21
5VGEN
20
VDDA
19
DCAP
18
CPUMP
17
SUB
0.02
0.01
1
2
3
4 5 6 7 8 9 10
20
Output Power (W)
1
TAA2009 –KLi/1.02/ 05.06