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TPA6047A4RHBT 数据手册 - TI（德州仪器）
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TPA6047A4RHBT数据手册
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1
FEATURES
DESCRIPTION
APPLICATIONS
SIMPLIFIED APPLICATION CIRCUIT
CODEC
VDD
SPKR
SPKR_LIN–
BYPASS
SGND
HP_EN
SPKR_EN
SPKR_RIN–
SPKR_LIN+
HP_INR
HP_INL
HPVDD
CPVDD
VDD
REG_EN
REG_OUT
SPKR_RIN+
ROUT+
LOUT+
ROUT–
LOUT–
SPVDD
CPVSS
C1P
HPVSS
SPGND
CPGND
C1N
GAIN0
GAIN1
OUTL
OUTR
HPR
HPL
SPKL
TPA6047A4
Shutdown
Control
3V – 5.5V
4.5V – 5.5V
RegulatorEnable
4.75V(ToCODEC)
4.5V – 5.5V
Gain
Control
TPA6047A4
www.ti.com
.............................................................................................................................................................................................. SLOS601 – OCTOBER 2008
2-W STEREO AUDIO POWER AMPLIFIER
WITH DirectPath™ STEREO HEADPHONE DRIVE AND REGULATOR
23
• Microsoft™ Windows Vista™ Compliant
• Fully Differential Architecture and High PSRR
The TPA6047A4 is a stereo audio power amplifier
and DirectPath™ headphone amplifier in a thermally
Provide Excellent RF Rectification Immunity
enhanced, space-saving, 32-pin QFN package. The
• 2.1-W, 1% THD+N Into 4- Ω Speakers and
speaker amplifier is capable of driving 2.1 W per
100-mW, 10% THD+N Into 16- Ω Headphones
channel continuously into 4- Ω loads at 5 V. The
From 5-V Supply
headphone amplifier achieves a minimum of 100 mW
• DirectPath™ Headphone Amplifier Eliminates
at 10% THD+N from a 5-V supply. A built-in internal
Output Capacitors
(1)
4-step gain control for the speaker amplifier and a
fixed – 1.5 V/V gain for the headphone amplifier
• Internal 4-Step Speaker Gain Control: 10, 12,
minimizes external components needed.
15.6, 21.6 dB and Fixed – 1.5-V/V Headphone
Independent shutdown control and dedicated inputs
• 4.75-V Low Dropout Regulator for CODEC
for the speaker and headphone allow the TPA6047A4
• Independent Shutdown Controls for Speaker,
to simultaneously drive both headphones and internal
Headphone Amplifier, and Low Dropout
speakers. Differential inputs to the speaker amplifiers
Regulator (LDO)
offer superior power-supply and common-mode noise
• Output Short-Circuit and Thermal Protection
rejection.
• Notebook Computers
• Portable DVD
TPA6040A4 TPA6041A4 TPA6047A4
Speaker
Active Low Active Low Active High
Enable
LDO (V) 4.75 3.3 4.75
6, 10, 15.6, 10, 12, 15.6, 10, 12, 15.6,
Gain (dB)
21.6 21.6 21.6
(1) US Patent Number 5289137
1
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.
2 DirectPath, PowerPAD are trademarks of Texas Instruments.
3 Microsoft, Windows Vista are trademarks of Microsoft Corporation.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, 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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