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PDF TA0104A Data sheet ( Hoja de datos )

Número de pieza TA0104A
Descripción Digital Audio Amplifier Driver using Digital Power Processing
Fabricantes Tripath 
Logotipo Tripath Logotipo



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Tripath Technology, Inc. - Technical Information
TA 0 1 0 4 A
STEREO 500W (4) CLASS-T DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPPTM)
TECHNOLOGY
Technical Information
Revision 3.1 – June 2000
GENERAL DESCRIPTION
The TA0104A is a 500W continuous average (4), two channel Amplifier Driver
Module which uses 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
Audio/Video
Amplifiers/Receivers
Pro-audio Amplifiers
Automobile Power Amplifiers
Subwoofer Amplifiers
BENEFITS
Reduced system cost with smaller/less
expensive power supply and heat sink
http://www.DataSheet4U.com/
Signal fidelity equal to high quality Class-AB
amplifiers
High dynamic range compatible with digital
media such as CD and DVD
Features
Class-T architecture
Proprietary Digital Power Processing
technology
Supports wide range of output power levels
“Audiophile” Sound Quality
0.02% THD+N @ 300W, 8
0.02% IHF-IM @ 100W, 8
350W @ 8, 0.1% THD+N, Vs = +90V
500W @ 4, 0.1% THD+N, Vs = +90V
High Power
450W @ 8, 1% THD+N, Vs = +90V
750W @ 4, 1% THD+N, Vs = +90V
High Efficiency
90% @ 400W @ 8, Vs = +75V
85% @ 600W @ 4, Vs = +75V
Dynamic Range = 106 dB
Requires only N-Channel MOSFET output transistors
High power supply rejection ratio
Mute input
Outputs short-circuit protected
Over- and under-voltage protection
Bridgeable, single-ended outputs
38-pin quad package
Supports 100kHz BW of Super Audio CD and DVD-
Audio (Refer to Application Note for specifics)
TYPICAL PERFORMANCE AT +90V
THD+N vs Output Power
10
5 20Hz - 22kHz BW
f = 1kHz
2 BBM = 25nS
1 VS = +/-90V
0.5 Av = 200
ST STW38NB20 MOSFET
0.2
0.1
0.05
0.02
RL = 4
0.01
0.005
0.002
0.001
RL = 8
12
5 10 20
50
Output Power (W)
100
200
500 1K
1 TA104A – Rev. 3.1/06.00

1 page




TA0104A pdf
Tripath Technology, Inc. - Technical Information
Test/Application Circuit
V5
10K
V5
10K
CIN
RIN
IN1 6
1M
1M
0.1 uF
MUTE
4
ROCR1
ROCR2
OCR1
OCR2
BBM0
11
10
7
BBM1
8
CIN
RIN
IN2 5
1M
1M
0.1 uF
NC
NC
NC
V5
0.1 uF
36
37
38
3
TA0104A
18 FDBKN1
16 OCS1H+
1K
Processing
&
Modulation
15 OCS1H-
RS
22 HO1
21 HO1COM
RG
20 LO1
13 OCS1L+
RG
MD
MD
CBY
CBY
17 LO1COM
14 OCS1L-
RS
9 GNDKELVIN1
2 OVERLOADB
35 HMUTE
29 FDBKN2
1K
34 OCS2H+
33 OCS2H-
Processing
&
Modulation
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25
HO2
26 HO2COM
RG
27 LO2
32 OCS2L+
RG
30 LO2COM
31 OCS2L-
12 GNDKELVIN2
AGnd
PGnd
23
24
19
VSPOS
VSNEG
VN12
1 28
RS
MD
CBY
MD
CBY
RS
50pF
.1uF
LF
CF
.1uF
50pF
LF
CF
.1uF
VSPOS
100uF
RD RL
CD
VSNEG
100uF
VSPOS
100uF
RD RL
CD
VSNEG
100uF
NC - Not Connected (Must Be Left Floating)
Note - Heavy Lines Indicate High-Current Paths
5 TA104A – Rev. 3.1/06.00

5 Page





TA0104A arduino
Tripath Technology, Inc. - Technical Information
VN12 Supply
VN12 is an additional supply voltage required by the TA0104A. VN12 must be 12 volts more positive
than the nominal VSNEG. VN12 must track VSNEG, so if an unregulated supply is used for VSNEG, the
design of the supply for VN12 must behave accordingly. Generating the VN12 supply requires some
care.
The proper way to generate the voltage for VN12 is to use a 12V-supply voltage referenced to the
VSNEG supply rather than to ground (PGND). Figure 3 shows the correct way to power the TA0104A:
VSPOS
V5
VS
5V
PGND
VS
12V
AGND
VN12
VSNEG
Figure 3
One method to generate the VN12 supply voltage is to use a positive 12V IC regulator to drop PGND
down to 12V (relative to VSNEG). Care must be exercisedhttp://www.DataSheet4U.com/ with this method because some IC
regulators such as the LM340 series will not function properly with a large voltage drop across the
regulator, resulting in damage to the TA0104A.
Generating the VN12 voltage per Figure 4 is NOT recommended. Most power supplies only source
current from the positive terminal and will not be capable of generating the current required by VN12.
Furthermore, problems can arise since VN12 will not track movements in VSNEG.
VSPOS
V5
VS 5V
P GND
A GND
-55V
VS
VN12
VSNEG
Figure 4
11 TA104A – Rev. 3.1/06.00

11 Page







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