Datenblatt-pdf.com


TA0103A Schematic ( PDF Datasheet ) - Tripath

Teilenummer TA0103A
Beschreibung Digital Audio Amplifier Driver using Digital Power Processing
Hersteller Tripath
Logo Tripath Logo 




Gesamt 18 Seiten
TA0103A Datasheet, Funktion
Tripath Technology, Inc. - Technical Information
TA 0 1 0 3 A
Stereo 250W (4) Class-T Digital Audio Amplifier Driver using
Digital Power Processing (DPPTM) Technology
Technical Information
Revision 3.3 - June 2000
GENERAL DESCRIPTION
The TA0103A is a 250W 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
Home/PC Speaker Systems
Benefits
Reduced system cost with smaller/less
expensive power supply and heat sink
Signal fidelity equal to high quality Class-
AB amplifiers
http://www.DataSheet4U.com/
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
0.04% THD+N @ 55W, 8
0.03% IHF-IM @ 36W, 8
140W @ 8, 0.1% THD+N, VS = +54V
250W @ 4, 0.1% THD+N, VS = +54V
High Power
150W @ 8, 1% THD+N, VS = +54V
300W @ 4, 1% THD+N, VS = +54V
High Efficiency
92% @ 155W @ 8, VS = +45V
90% @ 275W @ 4, VS = +45V
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
10
20Hz - 22kHz BW
5
f = 1kHz
BBM = 65nS
Vs = +/-54V
Av = 20.75
2 ST STW38NB20 MOSFET
1
0.5
0.2
0.1
0.05
0.02
0.01
1
2
THD+N versus Output Power
RL= 8
RL= 4
5 10 20
50 100 200
Output Power (W)
1 TA0103 – Rev 3.3/06.00






TA0103A Datasheet, Funktion
Typical Performance at Vs = +54V
10
20Hz - 22kHz BW
5
f = 1kHz
BBM = 65nS
Vs = +/-54V
Av = 20.75
2 ST STW38NB20 MOSFET
1
0.5
0.2
0.1
0.05
0.02
0.01
1
2
THD+N versus Output Power
RL= 8
RL= 4
5 10 20
50 100 200
Output Power (W)
Tripath Technology, Inc. - Technical Information
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency versus Output Power
RL = 4Ω & 8
RL = 8
RL = 4
22Hz - 22kHz BW
f = 1kHz
BBM = 145nS
VS = +/-54V
Av = 20.75
ST STW38NB20 MOSFET
50 100 150 200 250 300 350 400 450
Output Power (W)
10
5
2
1
0.5
20Hz - 22kHz BW
BBM = 65nS
Pout = 10W/Channel
Vs = +/-54V
Av = 20.75
ST STW38NB20 MOSFET
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
10
20
50
THD+N versus Frequency
RL = 4
100 200
500 1k
Frequency (Hz)
2k
Intermodulation Performance
+10
+0
10Hz - 80kHz BW
19kHz, 20kHz, 1:1
-10
BBM = 65nS
Pout = 36W/Channel
-20 VS = +/-54V
0dBr = 12Vrms
-30 Av = 20.75
ST STW38NB20 MOSFET
-40
HIGH BW (4RX)LA=/D 4
-50
-60
-70
-80
-90
5k
10k
20k
-100http://www.DataSheet4U.com/
60
100
200
500 1k
2k
Frequency (Hz)
5k 10k 20k 30k
Channel Separation versus Frequency
groundedR) L = 4
+0
-10
20Hz - 22kHz BW
BBM = 65nS
-20 Pout = 60W/Channel
-30
VS = +/-54V
Av = 20.75
-40 ST STW38NB20 MOSFET
-50
-60
-70
-80
-90
-100
-110
-120
20
50 100 200
500 1k
Frequency (Hz)
2k
5k 10k 20k
+0
-10
20Hz - 22kHz BW
BBM = 65nS
-20 Pout = 0W
-30 VS = +/-54V
-40
RL = 4
Av = 20.75
-50 ST STW38NB20 MOSFET
-60
-70
-80
-90
-100
-110
-120
-130
-140
20
50 100
A-Weighted Noise FFT
200 500 1k
Frequency (Hz)
2k
5k 10k 20k
6 TA0103 – Rev 3.3/06.00

6 Page









TA0103A pdf, datenblatt
Tripath Technology, Inc. - Technical Information
Bridged Operation
Note that the two channels of a TA0103A amplifier can be used to provide a single, bridged amplifier
of almost four times the output power of one of the single-ended amplifier channels. To configure a
bridged amplifier, the input to one TA0103A channel must be the inverted signal of the input to the
other channel.
Low-frequency Power Supply Pumping
A potentially troublesome phenomenon in single-ended switching amplifiers is power supply
pumping. This is caused by current from the output filter inductor flowing into the power supply
output filter capacitors in the opposite direction as a DC load would drain current from them. Under
certain conditions (usually low-frequency input signals), this current can cause the supply voltage to
“pump” (increase in magnitude) and eventually cause over-voltage/under-voltage shut down.
Moreover, since over/under-voltage are not “latched” shutdowns, the effect would be an amplifier
that oscillates between on and off states. If a DC offset on the order of 0.3V is allowed to develop on
the output of the amplifier (see “DC Offset Adjust”), the supplies can be boosted to the point where
the amplifier’s over-voltage protection triggers.
One solution to the pumping issue is to use large power supply capacitors to absorb the pumped
supply current without significant voltage boost. The low frequency pole used at the input to the
driver determines the value of the supply capacitor required. This works for AC signals only.
Another solution to the supply pumping problem uses the fact that music has low frequency
information that is correlated in both channels (it is in phase). This information can be used to
eliminate boost by putting the two channels of a TA0103A amplifier out of phase with each other.
This works because each channel is pumping out of phase with the other, and the net effect is a
cancellation of pumping currents. The phase of the audio signals needs to be corrected by
connecting one of the speakers in the opposite polarity as the other channel.
VN12 Supply
http://www.DataSheet4U.com/
VN12 is an additional supply voltage required by the TA0103A. 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 4 shows the correct way to power the
TA0103A:
VSPOS
V5
VS
5V
PGND
VS
12V
AGND
VN12
VSNEG
Figure 4
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 exercised 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 TA0103A.
12 TA0103 – Rev 3.3/06.00

12 Page





SeitenGesamt 18 Seiten
PDF Download[ TA0103A Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
TA0103ADigital Audio Amplifier Driver using Digital Power ProcessingTripath
Tripath

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche