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TPA2008D2PWPRG4 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças TPA2008D2PWPRG4
Descrição Electrónicos  3-W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL
Download  24 Pages
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

TPA2008D2PWPRG4 Folha de dados(HTML) 1 Page - Texas Instruments

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FEATURES
DESCRIPTION
APPLICATIONS
PO − Output Power − W
0.01
0.1
1
4
20
0.01
0.1
1
10
f = 20 kHz
f = 1 kHz
f = 20 Hz
VDD = 5 V
RL = 3 Ω
Gain = 0 dB
TOTAL HARMONIC DISTORTION + NOISE
vs
OUTPUT POWER
0
10
20
30
40
50
60
70
80
90
100
0
0.5
1
1.5
2
2.5
3
3.5
8
Ω Speaker
4
Ω Speaker
3
Ω Speaker
VDD = 5 V
No Filter
PO − Output Power − W
EFFICIENCY
vs
OUTPUT POWER
TPA2008D2
SLOS413C – JULY 2003 – REVISED MAY 2004
3-W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL
3 W Per Channel into 3-
Ω Speakers
The TPA2008D2 is a third generation 5-V class-D
(THD+N = 10%)
amplifier from Texas Instruments. Improvements to
previous generation devices include: dc volume con-
– < 0.045% THD at 1.5 W, 1 kHz, 3-
Ω Load
trol, lower supply current, lower noise floor, higher
DC Volume Control With 2-dB Steps From
efficiency, smaller packaging, and fewer external
-38 dB to 20 dB
components. Most notably, a new filter-free class-D
Filter Free Modulation Scheme Operates
modulation technique allows the TPA2008D2 to di-
Without a Large and Expensive LC Output
rectly drive the speakers, without needing a low-pass
output filter consisting of two inductors and three
Filter
capacitors per channel. Eliminating this output filter
Extremely Efficient Third Generation 5-V
saves approximately 30% in system cost and 75% in
Class-D Technology
PCB area.
– Low Supply Current, 7 mA
The improvements and functionality make this device
– Low Shutdown Control, 1 µA
ideal for LCD projectors, LCD monitors, powered
– Low Noise Floor, -80 dBV
speakers, and other applications that demand more
battery life, reduced board space, and functionality
– Maximum Efficiency into 3
Ω, 78%
that surpasses currently available class-D devices.
– Maximum Efficiency into 8
Ω, 88%
A chip-level shutdown control limits total supply
– PSRR, -70 dB
current to 1 µA, making the device ideal for bat-
Integrated Depop Circuitry
tery-powered applications. Protection circuitry in-
Operating Temperature Range, -40
°C to 85°C
creases device reliability: thermal and short circuit.
Undervoltage shutdown saves battery power for more
Space-Saving, Surface Mount PowerPAD™
essential devices when battery voltage drops to low
Package
levels.
The TPA2008D2 is available in a 24-pin TSSOP
PowerPAD™package.
LCD Projectors
LCD Monitors
Powered Speakers
Battery Operated and Space Constrained
Systems
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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