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TPA6140A2YFF

更新时间： 2024-09-17 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
27页 786K
描述
CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIER WITH I2C VOLUME CONTROL

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TPA6140A2YFF 数据手册

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TPA6140A2  
www.ti.com .................................................................................................................................................................................................. SLOS598–MARCH 2009  
CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIER  
WITH I2C VOLUME CONTROL  
1
FEATURES  
DESCRIPTION  
2
•
TI Class-G Technology Significantly Prolongs  
Battery Life and Music Playback Time  
The TPA6140A2 (also known as TPA6140) is a  
Class-G DirectPath™ stereo headphone amplifier  
with built-in I2C volume control. 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. DirectPathTM technology eliminates  
external DC-blocking capacitors.  
–
–
0.6 mA / Ch Quiescent Current  
50% to 80% Lower Quiescent Current than  
Ground-Referenced Class-AB Headphone  
Amplifiers  
•
•
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  
I2C interface.  
The TPA6140A2 (TPA6140) I2C register map is  
compatible to the TPA6130A2, simplifying software  
development.  
Improves Low Frequency Audio Fidelity  
I2C Volume Control  
–
–59 dB to +4 dB Gain  
•
•
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  
Short-Circuit Current Limiter  
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.  
Thermal-Overload Protection  
The TPA6140A2 (TPA6140) is available in a 0,4 mm  
pitch, 16-bump 1,6 mm × 1,6 mm WCSP (YFF)  
package.  
Software Compatible with TPA6130A2  
0,4 mm Pitch, 1,6 mm × 1,6 mm WCSP  
Package  
1 mF  
OUTR+  
OUTR-  
OUTL+  
OUTL-  
INR+  
INR-  
INL+  
INL-  
APPLICATIONS  
OUTR  
OUTL  
CODEC  
•
•
•
Cellular Phones / Music Phones  
Portable Media / MP3 Players  
Portable CD / DVD Players  
TPA6140A2  
SGND  
AGND  
SCL  
SDA  
SCL  
SDA  
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.  
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 © 2009, Texas Instruments Incorporated  
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