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PDF TA2022 Data sheet ( Hoja de datos )
| Número de pieza | TA2022 | |
| Descripción | STEREO 90W DIGITAL AUDIO AMPLIFIER | |
| Fabricantes | Tripath | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA2022 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Tripath Technology, Inc. - Technical Information
TA 2 0 2 2
STEREO 90W (4Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPP™)
TECHNOLOGY
Technical Information
Revision 1.2 – JULY 2004
GENERAL DESCRIPTION
The TA2022 is a 90W (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 Players
Mini/Micro Component Systems
Home Theater
Powered Speakers
BENEFITS
Fully integrated solution with internal
FETs
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
FEATURES
Class-T architecture
High Power
100W @ 4Ω, 1.0% THD+N
90W @ 4Ω, 0.1% THD+N
60W @ 8Ω, 0.1% THD+N
“Audiophile” Sound Quality
0.015% THD+N @ 70W 4Ω
0.015% THD+N @ 45W 8Ω
0.10% IHF-IM @ 25W 4Ω
High Efficiency
92% @ 88W 8Ω
87% @ 125W 4Ω
Dynamic Range = 102 dB
Mute Input
Integrated Gate Drive Supply
Over-current protection
Over and under-voltage protection
Single ended outputs
Outputs can be operated in bridged mode
32-pin SSIP package
1 TA2022 – KLI/1.2/07-04
1 page  
Tripath Technology, Inc. - Technical Information
Note 8:
Note 9:
Note 10:
Note 11:
Note 12:
Note 13:
This specification includes the current draw from the internal buck regulator. If an
external floating supply is used, instead of the internal buck regulator, the quiescent
current draw of the VNN supply will be approximately 20mA.
This specification includes the current draw from both the TA2022 and the external
feedback biasing.
This is the current draw of the VN10 pin if an external “floating” 11V supply is used
instead of the internal buck regulator
These supply voltages are calculated using the IVPPSENSE AND IVNNSENSE
values shown in the Electrical Characteristics table. The typical voltage values
shown are calculated using a RVPPSENSE and RVNNSENSE value of 249kohm
without any tolerance variation. The minimum and maximum voltage limits shown
include either a +1% or –1% (+1% for Over-voltage turn on and Under-voltage turn
off, -1% for Over-voltage turn off and Under-voltage turn on) variation of
RVPPSENSE or RVNNSENSE off the nominal 249kohm value. These voltage
specifications are examples to show both typical and worst case voltage ranges for a
given RVPPSENSE and RVNNSENSE resistor value of 249kohm. Please refer to
the Application Information section for a more detailed description of how to calculate
the over and under voltage trip voltages for a given resistor value.
The fact that the over-voltage turn on and over-voltage turn off specifications exceed
the absolute maximum of +/-40V for the TA2022 does not imply that the part will work
at these elevated supply voltages. It also does not imply that TA2022 is tested or
guaranteed at these supply voltages. The supply voltages are simply a calculation
based on the process spread of the IVPPSENSE and IVNNSENSE currents (see Note 11).
The supply voltage must be maintained below the absolute maximum of +/-40V or
permanent damage to the TA2022 may occur.
The supply voltage limitation for 4 ohm single ended (+/-31V), or 8 ohm bridged (+/-
30V), is based on the current limit protection circuitry. The current limit circuitry may
be activated during large output excursions if the recommended supply voltage
ranges are exceeded.
This will result in the amplifier being muted.
5 TA2022 – KLI/1.2/07-04
5 Page 
Tripath Technology, Inc. - Technical Information
TYPICAL PERFORMANCE CHARACTERISTICS – SINGLE ENDED
100
VPP=|VNN|=31V
RL = 4Ω
90 AES 17 Filter
THD+N < 10%
80
70
60
50
40
30
20
10
0
0 10 20
Efficiency vs Output Power
30 40 50 60 70 80 90
Output Power (W)
100 110 120
10
f = 1kHz
5
RL= 4Ω
AES 17 Filter
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
1
2
THD+N vs Output Power
+/-27V
+/-23V
+/-31V
5 10 20
Output Power (W)
50 100 200
-70
-75
-80
-85
-90
-95
-100
-105
-110
-115
-120
20
VPP=|VNN|=31V
T YRF=RI=20kΩ
16kFFT
AES 17 Filter
50 100
Noise Floor
200 500 1k
Frequency (Hz)
2k
5k 10k 20k
100
VPP=|VNN|=35V
RL = 8Ω
90 AES 17 Filter
THD+N < 10%
80
Efficiency vs Output Power
70
60
50
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90
Output Power (W)
10
f = 1kHz
5
RL= 8Ω
AES 17 Filter
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
1
2
THD+N vs Output Power
+/-30V
+/-25V
+/-35V
5 10
Output Power (W)
20
50 100
-40
-45
VPP=|VNN|=31V
Po = 25W/ch, 4Ω
Po = 12.5W/ch, 8Ω
-50 BW = 22Hz - 22kHz
-55
-60
-65
-70
-75
-80
-85
-90
-95
-100
20
50 100
Channel Separation
RL = 4Ω
RL = 8Ω
200 500 1k
Frequency (Hz)
2k
5k 10k 20k
11 TA2022 – KLI/1.2/07-04
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TA2022.PDF ] | |
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