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LM4938MHX/NOPB PDF预览

LM4938MHX/NOPB

更新时间： 2024-11-22 11:13:47
品牌 Logo 应用领域
德州仪器 - TI 放大器功率放大器
页数 文件大小 规格书
36页 9316K
描述
具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器 | PWP | 28 | -20 to 85

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LM4938MHX/NOPB 数据手册

 浏览型号LM4938MHX/NOPB的Datasheet PDF文件第2页浏览型号LM4938MHX/NOPB的Datasheet PDF文件第3页浏览型号LM4938MHX/NOPB的Datasheet PDF文件第4页浏览型号LM4938MHX/NOPB的Datasheet PDF文件第5页浏览型号LM4938MHX/NOPB的Datasheet PDF文件第6页浏览型号LM4938MHX/NOPB的Datasheet PDF文件第7页 
LM4938  
www.ti.com  
SNAS245B –FEBRUARY 2005–REVISED MAY 2013  
LM4938 Boomer™ Audio Power Amplifier Series Stereo 2W Audio Power Amplifiers  
with DC Volume Control and Selectable Gain  
Check for Samples: LM4938  
1
FEATURES  
DESCRIPTION  
The LM4938 is a monolithic integrated circuit that  
provides DC volume control, and stereo bridged  
audio power amplifiers capable of producing 2W into  
4Ω with less than 1.0% THD or 2.2W into 3Ω with  
less than 1.0% THD.  
23  
•
Improved Click and Pop Circuitry Virtually  
Eliminates Noise During Turn On/Off  
Transitions  
•
•
•
DC Volume Control Interface  
System Beep Detect  
Boomer audio integrated circuits were designed  
specifically to provide high quality audio while  
requiring a minimum amount of external components.  
The LM4938 incorporates a DC volume control,  
Stereo Switchable Bridged/Single-Ended  
Power Amplifiers  
•
Selectable Internal/External Gain and Bass  
Boost  
stereo bridged audio power amplifiers and  
a
selectable gain or bass boost, making it optimally  
suited for multimedia monitors, portable radios,  
desktop, and portable computer applications.  
•
•
Thermal Shutdown Protection Circuitry  
Unity Gain Stable  
The LM4938 features an externally controlled, low-  
power consumption shutdown mode, and both a  
power amplifier and headphone mute for maximum  
system flexibility and performance.  
APPLICATIONS  
•
•
•
•
Flat Panel Displays  
Portable and Desktop Computers  
Multimedia Monitors  
Note 1: When properly mounted to the circuit board,  
LM4938MH will deliver 2W into 4Ω. See Application  
Information section HTSSOP PACKAGE PCB  
Portable Radios, PDAs, and Portable TVs  
MOUNTING  
information.  
CONSIDERATIONS  
for  
more  
KEY SPECIFICATIONS  
•
PO at 1% THD+N  
Note 2: An LM4938MH that has been properly  
mounted to the circuit board and forced-air cooled will  
deliver 2.2W into 3Ω.  
–
–
–
into 3Ω: 2.2W (typ)  
into 4Ω: 2.0W (typ)  
into 8Ω: 1.3W (typ)  
•
•
Single-ended mode  
THD+N at 92mW into 32Ω: 1.0% (typ)  
Shutdown Current: 0.5µA (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
3
Boomer is a trademark of Texas Instruments.  
All other 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 © 2005–2013, Texas Instruments Incorporated  
1234567...36

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LM4938MHX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM4938MH/NOPB TI

完全替代

 具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器 | PWP | 28 | -
LM4841MT/NOPB TI

完全替代

 IC 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28, TSSOP-28, Audio Control IC

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