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LM4903MM PDF预览

LM4903MM

更新时间: 2024-02-04 09:16:58
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器功率放大器
页数 文件大小 规格书
17页 646K
描述
1 Watt Audio Power Amplifier

LM4903MM 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:MSOP
包装说明:TSSOP, TSSOP8,.19针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.87
标称带宽:20 kHz商用集成电路类型:AUDIO AMPLIFIER
谐波失真:1%JESD-30 代码:S-PDSO-G8
JESD-609代码:e0长度:3 mm
湿度敏感等级:1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:1.07 W封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP8,.19
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:2.6/5 V
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:Audio/Video Amplifiers最大压摆率:10 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):2 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn85Pb15)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3 mm

LM4903MM 数据手册

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February 2003  
LM4903  
1 Watt Audio Power Amplifier  
General Description  
Key Specifications  
The LM4903 is an audio power amplifier primarily designed  
for demanding applications in mobile phones and other por-  
table communication device applications. It is capable of  
delivering 1 watt of continuous average power to an 8BTL  
load with less than 1% distortion (THD+N) from a 5VDC  
power supply.  
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Improved PSRR at 217Hz & 1KHz  
Power Output at 5.0V, 1% THD, 8Ω  
Power Output at 3.0V, 1% THD, 4Ω  
Power Output at 3.0V, 1% THD, 8Ω  
Shutdown Current  
62dB  
1.07W (typ)  
525mW (typ)  
390mW (typ)  
0.1µA (typ)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4903 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 Available in space-saving MSOP package  
n Ultra low current shutdown mode  
n BTL output can drive capacitive loads  
n Improved pop & click circuitry eliminates noise during  
turn-on and turn-off transitions  
n 2.0 - 5.5V operation  
n No output coupling capacitors, snubber networks or  
bootstrap capacitors required  
n Unity-gain stable  
The LM4903 features a low-power consumption shutdown  
mode, which is achieved by driving the shutdown pin with  
logic low. Additionally, the LM4903 features an internal ther-  
mal shutdown protection mechanism.  
The LM4903 contains advanced pop & click circuitry which  
eliminates noise which would otherwise occur during turn-on  
and turn-off transitions.  
n External gain configuration capability  
The LM4903 is unity-gain stable and can be configured by  
external gain-setting resistors.  
Applications  
n Mobile Phones  
n PDAs  
n Portable electronic devices  
Typical Application  
200467D3  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2003 National Semiconductor Corporation  
DS200467  
www.national.com  

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