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TPA6141A2 PDF预览

TPA6141A2

更新时间： 2024-11-20 07:04:43
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
18页 449K
描述
CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIER

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TPA6141A2 数据手册

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TPA6141A2  
www.ti.com .................................................................................................................................................................................................. SLOS634–MARCH 2009  
CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIER  
1
FEATURES  
DESCRIPTION  
2
•
TI Class-G Technology Significantly Prolongs  
Battery Life and Music Playback Time  
The TPA6141A2 (also known as TPA6141) is a  
Class-G DirectPath™ stereo headphone amplifier  
with selectable gain. Class-G technology maximizes  
battery life by adjusting the voltage supplies of the  
headphone amplifier based on the audio signal level.  
At low level audio signals, the internal supply voltage  
is reduced to minimize power dissipation.  
–
–
0.6 mA / Ch Quiescent Current  
50% to 80% Lower Quiescent Current Than  
Ground-Referenced Class-AB Headphone  
Amplifiers  
DirectPathTM  
DC-blocking capacitors.  
technology  
eliminates  
external  
•
DirectPathTM Technology Eliminates Large  
Output DC-Blocking Capacitors  
–
–
Outputs Biased at 0 V  
The device operates from a 2.5 V to 5.5 V supply  
voltage. Class-G operation keeps total supply current  
below 5.0 mA while delivering 500 µW per channel  
into 32 Ω. Shutdown mode reduces the supply  
current to less than 3 µA and is activated through the  
EN pin.  
Improves Low Frequency Audio Fidelity  
•
•
Active Click and Pop Suppression  
Fully Differential Inputs Reduce System Noise  
–
Also Configurable as Single-Ended Inputs  
•
•
•
•
•
•
•
•
SGND Pin Eliminates Ground Loop Noise  
Wide Power Supply Range: 2.5 V to 5.5 V  
100 dB Power Supply Noise Rejection  
Gain Settings: 0 dB and 6dB  
The device has built-in pop suppression circuitry to  
completely eliminate disturbing pop noise during  
turn-on and turn-off. The amplifier outputs have  
short-circuit and thermal-overload protection along  
with ±8 kV HBM ESD protection, simplifying end  
equipment compliance to the IEC 61000-4-2 ESD  
standard.  
Short-Circuit Current Limiter  
Thermal-Overload Protection  
The TPA6141A2 (TPA6141) is available in a 0,4 mm  
pitch, 16-bump 1,6 mm × 1,6 mm WCSP (YFF)  
package.  
±8 kV HBM ESD Protected Outputs  
0,4 mm Pitch, 1,6 mm × 1,6 mm WCSP  
Package  
1 mF  
APPLICATIONS  
OUTR+  
OUTR-  
OUTL+  
OUTL-  
INR+  
INR-  
INL+  
INL-  
•
•
•
Cellular Phones / Music Phones  
Portable Media / MP3 Players  
Portable CD / DVD Players  
OUTR  
OUTL  
CODEC  
TPA6141A2  
SGND  
AGND  
EN  
EN  
GAIN  
GAIN  
AVDD  
Vbat  
SW  
HPVSS  
CPN  
2.2 mH  
2.2 mF  
HPVDD  
2.2 mF  
CPP  
1 mF  
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
Class-G DirectPath, DirectPath are trademarks of Texas Instruments.  
PRODUCT PREVIEW information concerns products in the  
formative or design phase of development. Characteristic data and  
other specifications are design goals. Texas Instruments reserves  
the right to change or discontinue these products without notice.  
Copyright © 2009, Texas Instruments Incorporated  
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TPA6141A2 替代型号

型号 品牌 替代类型 描述 数据表
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