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TA2021B Datasheet

  • TA2021B

  • STEREO 25W (4OHM) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USI...

  • 12頁

  • ETC

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Tripath Technology, Inc. - Technical Information
TA2021B
STEREO 25W (4鈩? CLASS-T鈩?DIGITAL AUDIO AMPLIFIER DRIVER
USING DIGITAL POWER PROCESSING (DPP鈩? TECHNOLOGY
Technical Information
Revision 4.0 鈥?July 2003
General Description
The TA2021B is a 25W (4鈩? continuous average per channel Class-T Digital Audio Power Amplifier IC
using Tripath鈥檚 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
Features
Class-T architecture
Single Supply Operation
鈥淎udiophile鈥?Quality Sound
0.05% THD+N @ 13W 4鈩?/div>
0.1% THD+N @15.5W 4鈩?/div>
0.1% IHF-IM @ 1W 4鈩?/div>
High Power
25W @ 4鈩? 10% THD+N, V
DD
=14.6V
23.5W @ 4鈩? 10% THD+N, V
DD
=14.2V
14W @ 8鈩? 10% THD+N, V
DD
=14.2V
High Efficiency
88% @ 13.5W 8鈩?/div>
81% @ 25W 4鈩?/div>
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 鈥淪lug-Up鈥?package
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
10
5
2
THD+N (%)
1
0.5
0.2
0.1
RL=4鈩?/div>
RL=8鈩?/div>
VDD=14.2V
Av=12V/V
BW=22-22kHz
0.05
0.02
0.01
600m
1
2
3
4
5 6 7 89
20
Output Power (W)
1
TA2021B 鈥?4.0/07.03

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