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LM4902 PDF预览

LM4902

更新时间: 2024-01-13 10:45:04
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
18页 774K
描述
265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

LM4902 技术参数

是否无铅: 不含铅是否Rohs认证: 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:5.83
标称带宽:80 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:e3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:0.675 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:6 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:Matte Tin (Sn)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

LM4902 数据手册

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February 2002  
LM4902  
265mW at 3.3V Supply Audio Power Amplifier with  
Shutdown Mode  
j
General Description  
The LM4902 is a bridged audio power amplifier capable of  
delivering 265mW of continuous average power into an 8  
load with 1% THD+N from a 3.3V power supply.  
THD+N at 1kHz for 675mW continuous  
average output power into 8,  
VDD = 5V  
1.0% (max)  
0.1µA (typ)  
j
Shutdown current  
Boomer® audio power amplifiers were designed specifically  
to provide high quality output power from a low supply volt-  
age while requiring a minimal amount of external compo-  
nents. Since the LM4902 does not require output coupling  
capacitors, bootstrap capacitors or snubber networks, it is  
optimally suited for low-power portable applications.  
Features  
n MSOP and LLP packaging  
n No output coupling capacitors, bootstrap capacitors, or  
snubber circuits are necessary  
The LM4902 features an externally controlled, low power  
consumption shutdown mode, and thermal shutdown protec-  
tion.  
n Thermal shutdown protection circuitry  
n Unity-gain stable  
n External gain configuration capability  
n Latest generation ’click and pop’ suppression circuitry  
The closed loop response of the unity-gain stable LM4902  
can be configured by external gain-setting resistors.  
Applications  
n Cellular phones  
Key Specifications  
n PDA’s  
n Any portable audio application  
j
THD+N at 1kHz for 265mW continuous  
average output power into 8,  
VDD = 3.3V  
1.0% (max)  
Typical Application  
20029801  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2002 National Semiconductor Corporation  
DS200298  
www.national.com  

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