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TPA6135A2

更新时间： 2024-11-07 08:40:11
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德州仪器 - TI 放大器
页数 文件大小 规格书
22页 1016K
描述
DIRECTPATH? Stereo Headphone Amplifier

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TPA6135A2 数据手册

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TPA6135A2  
www.ti.com .................................................................................................................................................. SLOS623A–FEBRUARY 2009–REVISED APRIL 2009  
DIRECTPATH™ Stereo Headphone Amplifier  
With Differential Input and HI-Z Mode  
1
FEATURES  
DESCRIPTION  
23  
•
Patented DirectPath™ Technology Eliminates  
Need for DC-Blocking Capacitors  
The TPA6135A2 (sometimes referred to as TPA6135)  
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 0 dB or 6 dB.  
The amplifier drives 25 mW into 16 Ω speakers from  
a single 2.3 V supply. The TPA6135A2 (TPA6135)  
–
–
Outputs Biased at 0 V  
Excellent Low Frequency Fidelity  
•
Active Click and Pop Suppression  
HI-Z Output Mode  
•
•
•
2.1 mA Typical Supply Current  
Fully Differential or Single-Ended Inputs  
provides  
a
constant maximum output power  
–
Built-In Resistors Reduces Component  
Count  
independent of the supply voltage, thus facilitating the  
design for prevention of acoustic shock.  
–
Improves System Noise Performance  
The TPA6135A2 (TPA6135) features HI-Z mode  
which can set the outputs to a high impedance  
configuration. The fully differential inputs reduce  
system noise pickup between the audio source and  
the headphone amplifier. The high power supply  
noise rejection performance and differential  
architecture provide increased RF noise immunity.  
For single-ended input signals, connect INL+ and  
INR+ to ground.  
•
Constant Maximum Output Power from 2.3 V  
to 5.5 V Supply  
–
Simplifies Design to Prevent Acoustic  
Shock  
•
•
•
Improved RF Noise Immunity  
MicrosoftTM Windows VistaTM Compliant  
High Power Supply Noise Rejection  
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.  
–
–
100 dB PSRR at 217 Hz  
90 dB PSRR at 10 kHz  
•
•
•
•
•
Wide Power Supply Range: 2.3 V to 5.5 V  
Gain Settings: 0 dB and 6 dB  
Short-Circuit and Thermal-Overload Protection  
±8 kV HBM ESD Protected Outputs  
Small Package Available  
The TPA6135A2 (TPA6135) 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  
OUTR+  
INR+  
•
•
•
•
Smart Phones / Cellular Phones  
Notebook Computers  
CD / MP3 Players  
OUTR-  
OUTR  
INR-  
CODEC  
TPA6135A2  
OUTL+  
OUTL-  
INL+  
INL-  
OUTL  
Portable Gaming  
SGND  
PGND  
ENABLE  
EN  
GAIN  
HI-Z MODE  
VBAT  
GAIN  
HI-Z  
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 © 2009, Texas Instruments Incorporated  
1234567...22

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TPA6135A2 替代型号

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