TECHNICAL INFORMATION
Stereo 300W (4Ω) Class-T Digital Audio Amplifier Driver
Ω
using Digital Power Processing
TM
Technology
TA3020
PRELIMINARY – January 2001
General Description
The TA3020 is a two-channel, 300W (4Ω) per channel Amplifier Driver IC that uses Tripath’s
TM
proprietary Digital Power Processing (DPP ) 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
Features
!"Class-T
architecture
!"Proprietary
Digital Power Processing technology
!"“Audiophile”
Sound Quality
!"0.02%
THD+N @ 50W, 8Ω
!"0.03%
IHF-IM @ 30W, 8Ω
!"High
Efficiency
!"95%
@ 150W @ 8Ω
!"90%
@ 275W @ 4Ω
!"Supports
wide range of output power levels
!"Up
to 300W/channel (4Ω), single-ended outputs
!"Up
to 1000W (4Ω), bridged outputs
!"Output
over-current protection
!"Over-
and under-voltage protection
!"48-pin
DIP (dual-inline package)
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
Typical Performance
10
5
THD+N versus Output Power versus Supply Voltage
R
L
= 4Ω
f = 1kHz
BBM = 80nS
BW = 22Hz - 22kHz
39V
2
1
45V
54V
THD+N (%)
0.5
0.2
0.1
0.05
0.02
0.01
1
2
5
10
20
50
100
200
500
Output Power (W)
TA3020, Rev 2.1, 01.01
1
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
