TECHNICAL INFORMATION
Stereo 10W (4Ω) Class-T™ Digital Audio Amplifier using
Ω
Digital Power Processing™ Technology
TA1101B
September 2000
General Description
The TA1101B is a 10W continuous average two-channel Class-T Digital Audio Power
Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T
amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D
amplifiers.
Applications
!"Computer/PC
Multimedia
!"DVD
Players
!"Cable
Set-Top Products
!"Televisions
!"Video
CD Players
!"Battery
Powered Systems
Features
!"Class-T
architecture
!"Single
Supply Operation
!"“Audiophile”
Quality Sound
!"0.04%
THD+N @ 9W, 4Ω
!"0.18%
IHF-IM @ 1W, 4Ω
!"6W
@ 8Ω, 0.1% THD+N
!"11W
@ 4Ω, 0.1% THD+N
!"High
Power
!"10W
@ 8Ω, 10% THD+N
!"15W
@ 4Ω, 10% THD+N
!"High
Efficiency
!"88%
@ 10W, 8Ω
!"81%
@ 15W, 4Ω
!"Dynamic
Range = 102 dB
!"Mute
and Sleep inputs
!"Turn-on
& turn-off pop suppression
!"Over-current
protection
!"Over-temperature
protection
!"Bridged
outputs
!"30-pin
Power SOP package
Benefits
!"Fully
integrated solution with FETs
!"Easier
to design-in than Class-D
!"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
Typical Performance
THD+N versus Output Power
10
5
VDD = 12V
f = 1kHz
Av = 12
BW = 22Hz - 22kHz
2
1
THD+N (%)
0.5
0.2
0.1
0.05
R
L
= 8Ω
R
L
= 4Ω
0.02
0.01
500m
1
2
5
10
20
Output Power (W)
TA1101B, Rev. 2.2, 08.17.00
1
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
