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LM4928

更新时间： 2024-01-21 03:50:39
品牌 Logo 应用领域
美国国家半导体 - NSC 音频放大器射频
页数 文件大小 规格书
20页 1001K
描述
1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low

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LM4928 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：FBGA, BGA16,4X4,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
Factory Lead Time：1 week风险等级：5.47
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：S-PBGA-B16
JESD-609代码：e1湿度敏感等级：1
功能数量：2端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：FBGA
封装等效代码：BGA16,4X4,20封装形状：SQUARE
封装形式：GRID ARRAY, FINE PITCH峰值回流温度（摄氏度）：260
电源：3/5 V认证状态：Not Qualified
子类别：Audio/Video Amplifiers最大压摆率：7.5 mA
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Silver/Copper (Sn/Ag/Cu)端子形式：BALL
端子节距：0.5 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

LM4928 数据手册

 浏览型号LM4928的Datasheet PDF文件第2页浏览型号LM4928的Datasheet PDF文件第3页浏览型号LM4928的Datasheet PDF文件第4页浏览型号LM4928的Datasheet PDF文件第5页浏览型号LM4928的Datasheet PDF文件第6页浏览型号LM4928的Datasheet PDF文件第7页 
February 2006  
LM4928  
1.2 Watt Stereo Fully Differential Audio Amplifier with RF  
Suppression and Shutdown Low  
General Description  
Key Specifications  
The LM4928 is an stereo fully differential stereo audio power  
amplifier primarily designed for demanding applications in  
mobile phones and other portable communication devices. It  
is capable of delivering 1.2 watts of continuous average  
power to a 8Ω load with less than 1% distortion (THD+N)  
from a 5VDC power supply.  
j
j
j
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Improved PSRR at 217Hz  
90dB (typ)  
@
Output Power at 5.0V 1% THD+N (8Ω) 1.2W (typ)  
@
Output Power at 3.0V 1% THD+N (8Ω)400mW (typ)  
Shutdown Current 0.1µA (typ)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4928 does not require output  
coupling capacitors or bootstrap capacitors, and therefore is  
ideally suited for mobile phone and other low voltage appli-  
cations where minimal power consumption is a primary re-  
quirement.  
Features  
n RF Suppression Circuitry  
n Fully differential amplification  
n Available in space-saving micro SMD and LLP packages  
n Ultra low current shutdown mode  
n Can drive capacitive loads up to 100pF  
n Improved pop & click circuitry eliminates noises during  
turn-on and turn-off transitions  
n 2.4 - 5.5V operation  
n No output coupling capacitors, snubber networks or  
bootstrap capacitors required  
The LM4928 features a low-power consumption shutdown  
mode. To facilitate this, shutdown may be enabled by logic  
low. Additionally, the LM4928 features an internal thermal  
shutdown protection mechanism.  
The LM4928 contains advanced pop & click circuitry which  
eliminates noises which would otherwise occur during  
turn-on and turn-off transitions.  
Applications  
n Mobile phones  
n PDAs  
n Portable electronic devices and accessories  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2006 National Semiconductor Corporation  
DS201600  
www.national.com  
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