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TPA6045A4C

更新时间: 2024-11-04 07:04:43
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德州仪器 - TI 稳压器放大器功率放大器驱动
页数 文件大小 规格书
30页 1207K
描述
2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath™ STEREO HEADPHONE DRIVE AND REGULATOR

TPA6045A4C 数据手册

 浏览型号TPA6045A4C的Datasheet PDF文件第2页浏览型号TPA6045A4C的Datasheet PDF文件第3页浏览型号TPA6045A4C的Datasheet PDF文件第4页浏览型号TPA6045A4C的Datasheet PDF文件第5页浏览型号TPA6045A4C的Datasheet PDF文件第6页浏览型号TPA6045A4C的Datasheet PDF文件第7页 
TPA6045A4C  
www.ti.com.............................................................................................................................................................................................. SLOS614OCTOBER 2008  
2-W STEREO AUDIO POWER AMPLIFIER  
WITH DirectPath™ STEREO HEADPHONE DRIVE AND REGULATOR  
1
FEATURES  
DESCRIPTION  
23  
Microsoft™ Windows Vista™ Compliant  
Fully Differential Architecture and High PSRR  
Provide Excellent RF Rectification Immunity  
The TPA6045A4C is a stereo audio power amplifier  
and DirectPath™ headphone amplifier in a thermally  
enhanced, space-saving, 32-pin QFN package. The  
speaker amplifier is capable of driving 2.1 W per  
channel continuously into 4-loads at 5 V. The  
headphone amplifier achieves a minimum of 85 mW  
at 1% THD+N from a 5-V supply. A built-in internal  
4-step gain control for the speaker amplifier and a  
fixed –1.5 V/V gain for the headphone amplifier  
minimizes external components needed.  
2.1-W, 1% THD+N Into 4-Speakers and  
85-mW, 1% THD+N Into 16-Headphones  
From 5-V Supply  
DirectPath™ Headphone Amplifier Eliminates  
(1)  
Output Capacitors  
Internal 4-Step Speaker Gain Control: 10, 12,  
15.6, 21.6 dB and Fixed –1.5-V/V Headphone  
Independent shutdown control and dedicated inputs  
for the speaker and headphone allow the  
3.3-V Low Dropout Regulator for CODEC  
Independent Shutdown Controls for Speaker,  
Headphone Amplifier, and Low Dropout  
Regulator (LDO)  
TPA6045A4C  
to  
simultaneously  
drive  
both  
headphones and internal speakers. Differential inputs  
to the speaker amplifiers offer superior power-supply  
and common-mode noise rejection.  
Output Short-Circuit and Thermal Protection  
APPLICATIONS  
Notebook Computers  
Portable DVD  
SIMPLIFIED APPLICATION CIRCUIT  
TPA6045A4C  
Speaker  
LDO (V)  
4.75  
3.3  
Gain (dB)  
Enable  
CODEC  
ROUT+  
ROUT–  
SPKR_RIN+  
SPKR_RIN–  
SPKR  
HPR  
6, 10, 15.6,  
21.6  
TPA6040A4  
TPA6041A4  
TPA6043A4  
TPA6045A4C  
TPA6047A4  
Active Low  
LOUT+  
LOUT–  
HPL  
10, 12, 15.6,  
21.6  
SPKR_LIN+  
SPKR_LIN–  
SPKL  
Active Low  
Active Low  
Active High  
Active High  
VDD  
SPVDD  
SPGND  
4.5 V – 5.5 V  
6, 10, 15.6,  
21.6  
BYPASS  
3.3  
GAIN0  
GAIN1  
Gain  
Control  
HP_EN  
10, 12, 15.6,  
21.6  
Shutdown  
Control  
3.3  
SPKR_EN  
OUTL  
OUTR  
10, 12, 15.6,  
21.6  
HP_INR  
SGND  
4.75  
HPVSS  
CPVSS  
HP_INL  
HPVDD  
CPVDD  
VDD  
3 V – 5.5 V  
CPGND  
C1P  
C1N  
4.5 V – 5.5 V  
Regulator Enable  
REG_EN  
REG_OUT  
3.3 V (To CODEC)  
(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
3
DirectPath, PowerPAD are trademarks of Texas Instruments.  
Microsoft, Windows Vista are trademarks of Microsoft Corporation.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  

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