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PDF TA2024 Data sheet ( Hoja de datos )
| Número de pieza | TA2024 | |
| Descripción | Digital Audio Amplifier using Digital Power Processing | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA2024 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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TECHNICAL INFORMATION
Stereo 10W (4Ω) Class-T™ Digital Audio Amplifier using
Digital Power Processing™ Technology
TA2024
February 27, 2001 – Preliminary Rev. 1.0
General Description
The TA2024 is a 10W/ch continuous average two-channel Class-T Digital Audio Power Amplifier
IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T amplifiers offer
both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.
Applications
¾Computer/PC Multimedia
¾DVD Players
¾Cable Set-Top Products
¾Televisions
¾Video CD Players
¾Battery Powered Systems
Benefits
¾Fully integrated solution with FETs
¾Easier to design-in than Class-D
¾Reduced system cost with no heat sink
¾Dramatically improves efficiency versus
Class-AB
¾Signal fidelity equal to high quality linear
amplifiers
¾High dynamic range compatible with digital
media such as CD, DVD, and Internet audio
Features
¾Class-T architecture
¾Single Supply Operation
¾“Audiophile” Quality Sound
¾0.04% THD+N @ 9W, 4Ω
¾0.18% IHF-IM @ 1W, 4Ω
¾6W @ 8Ω, 0.1% THD+N
¾11W @ 4Ω, 0.1% THD+N
¾High Power
¾10W @ 8Ω, 10% THD+N
¾15W @ 4Ω, 10% THD+N
¾High Efficiency
¾88% @ 10W, 8Ω
¾81% @ 15W, 4Ω
¾Dynamic Range = 102 dB
¾Mute and Sleep inputs
¾Turn-on & turn-off pop suppression
¾Over-current protection
¾Over-temperature protection
¾Bridged outputs
¾36-pin Power SOP package
Typical Performance
THD+N versus Output Power
10
VDD = 12V
5 f = 1kHz
Av = 12
BW = 22Hz - 22kHz
2
1
0.5
0.2
0.1 RL= 8Ω
0.05
0.02
0.01
500m
1
25
Output Power (W)
RL= 4Ω
10 20
TA2024 Preliminary, Rev. 1.0
Page 1
1 page  
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
TA2024
Processing
&
Modulation
CI
2.2uF
+
20KRΩF
RI
20KΩ
VP2 14
IN2 15
6
(Pin 8) 8.25KΩR, 1R%EF
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
Processing
&
Modulation
5V
13
21
23 NC
32
34
VDD1
31 OUTP1
Lo
10uH, 2A
PGND1
VDD1
DO
(Pin 35)
(Pin 35)
28 OUTM1
10uLHo, 2A
*Co
0.47uF
*0C.4o7uF
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
DO
(Pin 20)
(Pin 20)
27 OUTM2 10uLHo, 2A
*Co
0.47uF
CZ
0.47uF
*Co
0.47uF
RZ
10Ω, 1/2W
C0.C1MuF
PGND2
DO
(Pin 20)
CPUMP 36
VDDA 33
DGND 22
+5VGEN 1
VDD1 30
VDD1 29
PGND1 35
VDD2 25
VDD2 26
PGND2 20
+ 1CuPF
CS
0.1uF
0C.S1uF
To Pins 4,9
CSW
0.1uF
+ CSW
180uF, 16V
VDD (+12V)
CSW
0.1uF
+ CSW
180uF, 16V
RL
4Ω or *8Ω
4Ω oRrL*8Ω
Note: Analog and Digital/Power Grounds must
be connected locally at the TA2024
Analog Ground
Digital/Power Ground
All Diodes Motorola MBRS130T3
* Use Co = 0.22µF for 8 Ohm loads
TA2024 Preliminary, Rev. 1.0
Page 5
5 Page 
TECHNICAL INFORMATION
Performance Measurements of the TA2024
The TA2024 operates by generating a high frequency switching signal based on the audio input. This
signal is sent through a low-pass filter (external to the Tripath amplifier) that recovers an amplified
version of the audio input. The frequency of the switching pattern is spread spectrum and typically
varies between 100kHz and 1.0MHz, which is well above the 20Hz – 20kHz audio band. The pattern
itself does not alter or distort the audio input signal but it does introduce some inaudible components.
The measurements of certain performance parameters, particularly noise related specifications such
as THD+N, are significantly affected by the design of the low-pass filter used on the output as well as
the bandwidth setting of the measurement instrument used. Unless the filter has a very sharp roll-off
just beyond the audio band or the bandwidth of the measurement instrument is limited, some of the
inaudible noise components introduced by the Tripath amplifier switching pattern will degrade the
measurement.
One feature of the TA2024 is that it does not require large multi-pole filters to achieve excellent
performance in listening tests, usually a more critical factor than performance measurements.
Though using a multi-pole filter may remove high-frequency noise and improve THD+N type
measurements (when they are made with wide-bandwidth measuring equipment), these same filters
degrade frequency response. The TA2024 Evaluation Board uses the Test/Application Circuit in this
data sheet, which has a simple two-pole output filter and excellent performance in listening tests.
Measurements in this data sheet were taken using this same circuit with a limited bandwidth setting in
the measurement instrument.
TA2024 Preliminary, Rev. 1.0
Page 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TA2024.PDF ] | |
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