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LM4867LQ PDF预览

LM4867LQ

更新时间: 2024-11-09 20:35:19
品牌 Logo 应用领域
德州仪器 - TI 放大器商用集成电路
页数 文件大小 规格书
36页 1375K
描述
3W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24, EXPOSED PAD, LLP-24

LM4867LQ 技术参数

生命周期:ObsoleteReach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.69Is Samacsys:N
商用集成电路类型:AUDIO AMPLIFIERBase Number Matches:1

LM4867LQ 数据手册

 浏览型号LM4867LQ的Datasheet PDF文件第2页浏览型号LM4867LQ的Datasheet PDF文件第3页浏览型号LM4867LQ的Datasheet PDF文件第4页浏览型号LM4867LQ的Datasheet PDF文件第5页浏览型号LM4867LQ的Datasheet PDF文件第6页浏览型号LM4867LQ的Datasheet PDF文件第7页 
OBSOLETE  
LM4867  
www.ti.com  
SNAS117B MAY 2004REVISED OCTOBER 2004  
LM4867  
Output-Transient-Free Dual 2.1W Audio Amplifier  
Plus No Coupling Capacitor Stereo Headphone Function  
Check for Samples: LM4867  
1
FEATURES  
DESCRIPTION  
The LM4867 is a dual bridge-connected audio power  
2
Advanced “Click and Pop” Suppression  
Circuitry  
amplifier which, when connected to a 5V supply, will  
(1)  
(2)  
deliver 2.1W to a 4Ω load  
or 2.4W to a 3Ω load  
Eliminates Headphone Amplifier Output  
Coupling Capacitors (Patent Pending)  
with less than 1.0% THD+N (see notes below). The  
LM4867 uses advanced, latest generation circuitry to  
eliminate all traces of clicks and pops when the  
supply voltage is first applied. The amplifier has a  
headphone-amplifier-select input pin. It is used to  
switch the amplifiers from bridge to single-ended  
mode for driving headphones. A new circuit topology  
eliminates headphone output coupling capacitors  
(patent pending). A MUX control pin allows selection  
between the two sets of stereo input signals. The  
MUX control can also be used to select between two  
different customer-specified closed-loop responses.  
Stereo Headphone Amplifier Mode  
Input Mux Control and Two Separate Inputs  
Per Channel  
Thermal Shutdown Protection Circuitry  
WQFN, TSSOP, and HTSSOP Packaging  
Available  
APPLICATIONS  
Multimedia Monitors  
Boomer audio power amplifiers are designed  
specifically to provide high quality output power from  
a surface mount package and require few external  
components. To simplify audio system design, the  
LM4867 combines dual bridge speaker amplifiers and  
stereo headphone amplifiers in one package.  
Portable and Desktop Computers  
Portable Audio Systems  
KEY SPECIFICATIONS  
PO at 1% THD+N  
The LM4867 features an externally controlled power-  
LM4867LQ, 3Load, 2.4W (Typ)  
LM4867LQ, 4Load, 2.1W (Typ)  
LM4867MTE, 4, 1.9W (Typ)  
LM4867MT, 8, 1.1W (Typ)  
saving micropower shutdown mode,  
a
stereo  
headphone amplifier mode, and thermal shutdown  
protection.  
(1) An LM4867LQ or LM4867MTE that has been properly  
mounted to a circuit board will deliver 2.1W into 4. The Mux  
control can also be used to select two different closed-loop  
responses. LM4867MT will deliver 1.1W into 8. See the  
Application Information sections for further information  
concerning the LM4867LQ and the LM4867MT.  
(2) An LM4867LQ or LM4867MTE that has been properly  
mounted to a circuit board and forced-air cooled will deliver  
2.4W into 3.  
Single-Ended Mode - THD+N at 75mW into  
32Ω, 0.5% (Max)  
Shutdown Current, 0.7µA (Typ)  
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
All trademarks are the property of their respective owners.  
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 © 2004, Texas Instruments Incorporated  

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