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LM4890IBPX PDF预览

LM4890IBPX

更新时间： 2024-01-31 19:58:03
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
36页 1998K
描述
1W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8, MICRO, SMD-8

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LM4890IBPX 技术参数

生命周期：Obsolete零件包装代码：BGA
包装说明：MICRO, SMD-8针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.55
Is Samacsys：N商用集成电路类型：AUDIO AMPLIFIER
谐波失真：2%JESD-30 代码：S-PBGA-B8
长度：1.361 mm信道数量：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：1 W封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA封装形状：SQUARE
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH座面最大高度：0.95 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2.2 V
表面贴装：YES温度等级：INDUSTRIAL
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM宽度：1.361 mm
Base Number Matches：1

LM4890IBPX 数据手册

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LM4890  
www.ti.com  
SNAS138L –SEPTEMBER 2001–REVISED MAY 2013  
LM4890  
1 Watt Audio Power Amplifier  
Check for Samples: LM4890  
1
FEATURES  
DESCRIPTION  
The LM4890 is an audio power amplifier primarily  
designed for demanding applications in mobile  
phones and other portable communication device  
applications. It is capable of delivering 1 watt of  
continuous average power to an 8Ω BTL load with  
less than 1% distortion (THD+N) from a 5VDC power  
supply.  
2
•
Available in Space-Saving Packages: DSBGA,  
VSSOP, SOIC, and WSON  
•
•
•
Ultra Low Current Shutdown Mode  
BTL Output Can Drive Capacitive Loads  
Improved Pop & Click Circuitry Eliminates  
Noises During Turn-On and Turn-Off  
Transitions  
Boomer audio power amplifiers were designed  
specifically to provide high quality output power with a  
minimal amount of external components. The  
LM4890 does not require output coupling capacitors  
or bootstrap capacitors, and therefore is ideally suited  
for mobile phone and other low voltage applications  
where minimal power consumption is a primary  
requirement.  
•
•
2.2 - 5.5V Operation  
No Output Coupling Capacitors, Snubber  
Networks or Bootstrap Capacitors Required  
•
•
•
Thermal Shutdown Protection  
Unity-Gain Stable  
External Gain Configuration Capability  
The LM4890 features a low-power consumption  
shutdown mode, which is achieved by driving the  
shutdown pin with logic low. Additionally, the LM4890  
features an internal thermal shutdown protection  
mechanism.  
APPLICATIONS  
•
•
•
Mobile Phones  
PDAs  
Portable Electronic Devices  
The LM4890 contains advanced pop & click circuitry  
which eliminates noises which would otherwise occur  
during turn-on and turn-off transitions.  
KEY SPECIFICATIONS  
•
•
•
•
PSRR at 217Hz, VDD = 5V (Fig. 1): 62dB(typ.)  
Power Output at 5.0V & 1% THD: 1W(typ.)  
Power Output at 3.3V & 1% THD: 400mW(typ.)  
Shutdown Current: 0.1μA(typ.)  
The LM4890 is unity-gain stable and can be  
configured by external gain-setting resistors.  
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 © 2001–2013, Texas Instruments Incorporated  
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