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PDF TA2021 Data sheet ( Hoja de datos )
| Número de pieza | TA2021 | |
| Descripción | DIGITAL AUDIO AMPLIFIER DRIVER | |
| Fabricantes | TRIPATH | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA2021 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Tripath Technology, Inc. - Technical Information
TA 2 0 2 1
STEREO 20W (4Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER DRIVER
USING DIGITAL POWER PROCESSING (DPP™) TECHNOLOGY
Technical Information
Preliminary Revision 1.0 – April 2002
GENERAL DESCRIPTION
The TA2021 is a 20W (4Ω) continuous average per channel Class-T Digital Audio
Power Amplifier IC using Tripath’s proprietary Digital Power Processing (DPPTM)
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 versus Output Power
10
5
VDD = 13.5V
Av = 12
f = 1kHz
2 BW = 22Hz - 22kHz
1
0.5
0.2
0.1
RL= 8Ω
RL= 4Ω
0.05
0.02
0.01
500m
1
2 3 4 5 6 7 8 9 10
Output Power (W)
20
FEATURES
Class-T architecture
Single Supply Operation
“Audiophile” Quality Sound
0.03% THD+N @ 10W 4Ω
0.1% THD+N @12W 4Ω
0.18% IHF-IM @ 1W 4Ω
High Power
13W @ 8Ω, 10% THD+N
22W @ 4Ω, 10% THD+N
38W EIAJ* VDD=14.4V @ 4Ω
*saturated square wave output
High Efficiency
88% @ 12W 8Ω
81% @ 20W 4Ω
Dynamic Range = 103 dB
Up to 2x25Wrms @ 4Ω, VDD=14.6V
Mute and Sleep inputs
Turn-on & turn-off pop suppression
Over-current protection
Over-temperature protection
Bridged outputs
36-pin PSOP package
1 TA2021 – MTI/1.0/04-02
1 page  
Tripath Technology, Inc. - Technical Information
APPLICATION /TEST CIRCUIT
CI
2.2uF
+
RF
20KΩ
RI
20KΩ
VP1 10
IN1 11
CA
0.1uF
(Pin 8)
BIASCAP 16
5V
MUTE 12
5V
CI
2.2uF
+
RF
20KΩ
RI
20KΩ
VP2 14
IN2 15
6
(Pin 8)
RREF
8.25KΩ, 1%
3
REF
DCAP1
+12V
1meg Ω
CD
0.1uF
0.1uF
To Pin 1
CS
0.1uF
CS
0.1uF
2 DCAP2
18 SLEEP
4 V5D
5 AGND1
9 V5A
8 AGND2
17 AGND3
13
21
23 NC
32
34
TA2021
Processing
&
Modulation
Processing
&
Modulation
5V
VDD1
31 OUTP1
Lo
10uH, 2A
PGND1
VDD1
DO
(Pin 35)
(Pin 35)
28 OUTM1
Lo
10uH, 2A
*Co
0.47uF
*Co
0.47uF
CZ
0.47uF
RZ
10Ω, 1/2W
CCM
0.1uF
PGND1
19
7
VDD2
DO
(Pin 35)
FAULT
OVERLOADB
24 OUTP2
Lo
10uH, 2A
PGND2
VDD2
27
DO
(Pin 20)
OUTM2
(Pin 20)
Lo
10uH, 2A
*Co
0.47uF
CZ
0.47uF
*Co
0.47uF
RZ
10Ω, 1/2W
CCM
0.1uF
PGND2
DO
(Pin 20)
CPUMP 36
VDDA 33
DGND 22
+5VGEN 1
VDD1 30
VDD1 29
PGND1 35
VDD2 25
VDD2 26
PGND2 20
+ CP
1uF
CS
0.1uF
CS
0.1uF
To Pins 4,9
CSW
0.1uF
+ CSW
180uF, 16V
VDD (+12V)
CSW
0.1uF
+ CSW
180uF, 16V
RL
4Ω or *8Ω
RL
4Ω or *8Ω
Note: Analog and Digital/Power Grounds must
be connected locally at the TA2021
Analog Ground
Digital/Power Ground
All Diodes Motorola MBRS130T3
* Use Co = 0.22µF for 8 Ohm loads
5 Product Name – Initial/Rev. #
5 Page 
Tripath Technology, Inc. - Technical Information
ADVANCED INFORMATION
This is a product in development. Tripath Technology, Inc. reserves the right to make any changes
without further notice to improve reliability, function and design.
Tripath and Digital Power Processing are trademarks of Tripath Technology. Other trademarks
referenced in this document are owned by their respective companies.
Tripath Technology, Inc. reserves the right to make changes without further notice to any products
herein to improve reliability, function or design. Tripath does not assume any liability arising out of the
application of use of any product or circuit described herein; neither does it convey any license under its
patent rights nor the rights of others.
TRIPATH’S PRODUCT ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE
SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN CONSENT OF THE
PRESIDENT OF TRIPATH TECHONOLOGY, INC. As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical
implant into the body, or (b) support or sustain life, and whose failure to perform, when
properly used in accordance with instructions for use provided in this labeling, can be
reasonably expected to result in significant injury of the user.
2. A critical component is any component of a life support device or system whose failure to
perform can be reasonably expected to cause the failure of the life support device or system,
or to affect its safety or effectiveness.
Contact Information
TRIPATH TECHNOLOGY, INC
2560 Orchard Parkway, San Jose, CA 95131
408.750.3000 - P
408.750.3001 - F
For more Sales Information, please visit us @ www.tripath.com/cont_s.htm
For more Technical Information, please visit us @ www.tripath.com/data.htm
11 Product Name – Initial/Rev. #
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TA2021.PDF ] | |
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