Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on
TA0102A
STEREO 150W (4Ω) CLASS-T DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPP
T M
)
TECHNOLOGY
Technical Information
Revision 3.1 – June 2000
GENERAL DESCRIPTION
The TA0102A is a 150W continuous average (4
Ω
), two channel Amplifier Driver
Module which uses Tripath’s proprietary Digital Power Processing (DPP
TM
)
technology.
Class-T amplifiers offer both the audio fidelity of Class-AB and
the power efficiency of Class-D amplifiers.
Applications
Audio/Video
Amplifiers/Receivers
Pro-audio Amplifiers
Automobile Power Amplifiers
Subwoofer Amplifiers
Benefits
Reduced system cost with smaller/less
expensive power supply and heat sink
Signal fidelity equal to high quality Class-
AB amplifiers
High dynamic range compatible with digital
media such as CD and DVD
Features
Class-T architecture
Proprietary Digital Power Processing
technology
Supports wide range of output power levels
“Audiophile” Quality Sound
0.05% THD+N @ 20W, 8Ω
0.03% IHF-IM @ 30W, 8Ω
80W @ 8Ω, 0.1% THD+N,
V
S
= +/-45V
150W @ 4Ω, 0.1% THD+N,
V
S
= +/-45V
High Power
100W @ 8Ω, 1% THD+N,
V
S
= +/-45V
170W @ 4Ω, 1% THD+N,
V
S
= +/-45V
High Efficiency
90% @ 85W @ 8Ω, V
S
=
+/-33.75V
88% @ 155W @ 4Ω,
V
S
= +/-33.75V
Dynamic Range = 108 dB
Requires only N-Channel MOSFET output
transistors
High power supply rejection ratio
Mute input
Outputs short circuit protected
Over- and under-voltage protection
Bridgeable, single-ended outputs
38-pin quad package
Supports 100kHz BW of Super Audio CD and
DVD-Audio (refer to Application Note for specifics)
Typical Performance
THD+N versus Output Power
10
5
20Hz - 22kHz BW
f = 1kHz
BBM = 25nS
Vs = +/-45V
Av = 14.8
ST STP19NB20 MOSFET
2
1
THD+N (%)
0.5
0.2
R
L
= 8Ω
0.1
0.05
R
L
= 4Ω
0.02
0.01
1
2
5
10
20
50
100
200
Output Power (W)
1
TA102A –Rev.3.1/06.01
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
