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TA2021B Datasheet(PDF) 1 Page - Tripath Technology Inc.

Part No. TA2021B
Description  STEREO 25W (4OHM) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPP) TECHNOLOGY
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Manufacturer  TRIPATH [Tripath Technology Inc.]
Direct Link  http://www.etelos.com/
Logo TRIPATH - Tripath Technology Inc.

TA2021B Datasheet(HTML) 1 Page - Tripath Technology Inc.

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Tri p ath Technology , Inc. - Techni cal Inform ation
1
TA2021B – 4.0/07.03
TA2021B
STEREO 25W (4
Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER DRIVER
USING DIGITAL POWER PROCESSING (DPP™) TECHNOLOGY
Tec hnical I n for m ati on
Re v i sion 4.0 – J u l y 2003
General Description
The TA2021B is a 25W (4
Ω) continuous average per channel Class-T Digital Audio Power Amplifier IC
using 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
DVD Receivers
Mini/Micro Component Systems
Computer / PC Multimedia
Cable Set-Top Products
Televisions
Battery Powered Systems
Benefits
Fully integrated solution with internal FETs
Easier to design-in than Class-D
Dramatically improves efficiency versus Class-AB
amplifiers
Signal fidelity equal to high quality linear
amplifiers
High dynamic range compatible with digital media
such as CD and DVD, and internet audio
Typical Performance
THD+N vs Output Power
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
600m
20
1
2
3
4
5 6 7 8 9
Output Power (W)
VDD=14.2V
Av=12V/V
BW=22-22kHz
Features
Class-T architecture
Single Supply Operation
“Audiophile” Quality Sound
0.05% THD+N @ 13W 4
0.1% THD+N @15.5W 4
0.1% IHF-IM @ 1W 4
High Power
25W @ 4
Ω, 10% THD+N, VDD=14.6V
23.5W @ 4
Ω, 10% THD+N, VDD=14.2V
14W @ 8
Ω, 10% THD+N, VDD=14.2V
High Efficiency
88% @ 13.5W 8
81% @ 25W 4
Dynamic Range = 100 dB
Mute and Sleep inputs
Turn-on & turn-off pop suppression
Over-current protection
Over-temperature protection
Bridged outputs
36-pin PSOP “Slug-Up” package
RL=8Ω
RL=4Ω


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