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TPA6132A2

更新时间： 2024-11-24 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
22页 1002K
描述
25-mW DIRECTPATH™ STEREO HEADPHONE AMPLIFIER WITH POP SUPPRESSION

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TPA6132A2 数据手册

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TPA6132A2  
www.ti.com ........................................................................................................................................................................................... SLOS597–DECEMBER 2008  
25-mW DIRECTPATH™ STEREO HEADPHONE AMPLIFIER WITH POP SUPPRESSION  
1
FEATURES  
DESCRIPTION  
23  
•
Patented DirectPath™ Technology Eliminates  
Need for DC-Blocking Capacitors  
The TPA6132A2 (sometimes referred to as TPA6132)  
is a DirectPath™ stereo headphone amplifier that  
eliminates the need for external dc-blocking output  
capacitors. Differential stereo inputs and built-in  
resistors set the device gain, further reducing external  
component count. Gain is selectable at –6 dB, 0 dB,  
3 dB or 6 dB. The amplifier drives 25 mW into 16 Ω  
speakers from a single 2.3 V supply. The TPA6132A2  
(TPA6132) provides a constant maximum output  
power independent of the supply voltage, thus  
facilitating the design for prevention of acoustic  
shock.  
–
–
Outputs Biased at 0 V  
Excellent Low Frequency Fidelity  
•
Active Click and Pop Suppression  
2.1 mA Typical Supply Current  
•
•
Fully Differential or Single-Ended Inputs  
–
Built-In Resistors Reduces Component  
Count  
–
Improves System Noise Performance  
•
Constant Maximum Output Power from 2.3 V  
to 5.5 V Supply  
The TPA6132A2 (TPA6132) features fully differential  
inputs to reduce system noise pickup between the  
audio source and the headphone amplifier. The high  
power supply noise rejection performance and  
differential architecture provides increased RF noise  
immunity. For single-ended input signals, connect  
INL+ and INR+ to ground.  
–
Simplifies Design to Prevent Acoustic  
Shock  
•
•
•
Improved RF Noise Immunity  
MicrosoftTM Windows VistaTM Compliant  
High Power Supply Noise Rejection  
–
–
100 dB PSRR at 217 Hz  
90 dB PSRR at 10 kHz  
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.  
•
•
•
•
•
Wide Power Supply Range: 2.3 V to 5.5 V  
Gain Settings: –6 dB, 0 dB, 3 dB, and 6 dB  
Short-Circuit and Thermal-Overload Protection  
±8 kV HBM ESD Protected Outputs  
Small Package Available  
The TPA6132A2 (TPA6132) operates from a single  
2.3 V to 5.5 V supply with 2.1 mA of typical supply  
current. Shutdown mode reduces supply current to  
less than 1 µA.  
–
16-Pin, 3 mm × 3 mm Thin QFN  
APPLICATIONS  
•
•
•
•
Smart Phones / Cellular Phones  
Notebook Computers  
CD / MP3 Players  
OUTR+  
OUTR-  
OUTL+  
OUTL-  
INR+  
INR-  
OUTR  
OUTL  
CODEC  
TPA6132A2  
INL+  
INL-  
Portable Gaming  
SGND  
PGND  
ENABLE  
EN  
G0  
GAIN0  
GAIN1  
VBAT  
G1  
VDD  
HPVSS  
CPN  
HPVDD  
CPP  
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 is a trademark of Texas Instruments.  
Windows Vista is a trademark 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  
1234567...22

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TPA6132A2 替代型号

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