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TA2020-020 データシート(Datasheet) 1 Page - Tripath Technology Inc.

部品番号. TA2020-020
部品情報  Stereo 20W (4Ω) Class-T Digital Audio Amplifier using Digital Power Processing Technology
ダウンロード  13 Pages
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メーカー  TRIPATH [Tripath Technology Inc.]
ホームページ  http://www.etelos.com/
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TEC H NIC A L INFOR M ATION
1 of 13
TA2020-020, Rev. 4.0, 09.00
Stereo 20W (4
Ω) Class-T Digital Audio Amplifier using
Digital Power ProcessingTM Technology
TA2020-020
September, 2000
General Description
The TA2020-020 is a 20W continuous average two-channel Class-T Digital Audio Power
Amplifier IC using Tripath’s proprietary Digital Power Processing
TM technology. Class-T
amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D
amplifiers.
Applications
DVD Players
Mini/Micro Component Systems
Automotive Audio
Computer / PC Multimedia
Cable Set-Top Products
Televisions
Battery Powered Systems
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
Features
Class-T architecture
Single Supply Operation
“Audiophile” Quality Sound
0.03% THD+N @ 10W 4
0.1% THD+N @12W 4
0.18% IHF-IM @ 1W 4
High Power
13W @ 8
Ω, 10% THD+N
23W @ 4
Ω, 10% THD+N
38W EIAJ* VDD=14.4V @ 4
*saturated square wave output
High Efficiency
88% @ 12W 8
81% @ 20W 4
Dynamic Range = 103 dB
Up to 2X25Wrms @ 4
Ω, VDD=14.6V
Mute and Sleep inputs
Turn-on & turn-off pop suppression
Over-current protection
Over-temperature protection
Bridged outputs
32-pin SSIP package
Typical Performance
Output Power (W)
THD+N versus Output Power
VDD = 13.5V
Av = 12
f = 1kHz
BW = 22Hz - 22kHz
1
2
3
4
5 6 7 8 9 10
20
500m
R
L= 8Ω
R
L= 4Ω
1
2
5
0.02
0.01
0.05
0.1
0.2
0.5
10
B




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