TA3020 Datasheet, PDF (1/29 Pages) Tripath Technology Inc. – Stereo 300W (4Ω) Class-T Digital Audio Amplifier Driver using Digital Power ProcessingTM Technology

TECHNICAL INFORMATION
Stereo 300W (4Ω) Class-T Digital Audio Amplifier Driver
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
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
!"“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)
Typical Performance
10
f = 1kHz
5 BBM = 80nS
BW = 22Hz - 22kHz
2
1
0.5
THD+N versus Output Power versus Supply Voltage
R_L = 4Ω
39V
45V _54V
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