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LM4911MM PDF预览

LM4911MM

更新时间: 2024-10-01 23:16:47
品牌 Logo 应用领域
美国国家半导体 - NSC 消费电路商用集成电路音频放大器视频放大器光电二极管
页数 文件大小 规格书
18页 925K
描述
Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output

LM4911MM 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:MSOP-10Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.17Is Samacsys:N
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-G10
JESD-609代码:e0长度:3 mm
湿度敏感等级:1信道数量:2
功能数量:1端子数量:10
最高工作温度:85 °C最低工作温度:-40 °C
标称输出功率:0.145 W封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP10,.19,20
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:2.4/5 V
认证状态:Not Qualified座面最大高度:1.09 mm
子类别:Audio/Video Amplifiers最大压摆率:5 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 (Sn/Pb)端子形式:GULL WING
端子节距:0.5 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
Base Number Matches:1

LM4911MM 数据手册

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July 2002  
LM4911  
Stereo 40mW Low Noise Headphone Amplifier with  
Selectable Capacitive Coupled or OCL Output  
General Description  
Key Specifications  
n PSRR at 217 Hz and 1kHz  
65dB (typ)  
The LM4911 is an stereo audio power amplifier capable of  
delivering 40mW per channel of continuous average power  
into a 16load or 25mW per channel into a 32load at 1%  
THD+N from a 3V power supply.  
n Output Power at 1kHz with VDD = 2.4V, 1% THD+N into  
a 16load 25mW (typ)  
n Output Power at 1kHz with VDD = 3V, 1% THD+N into a  
16load  
n Shutdown Current  
n Output Voltage change on release from Shutdown  
VDD = 2.4V, RL = 16(C-Coupled) 1mV (max)  
n Mute Current 100µA (max)  
40mW (typ)  
2.0µA (max)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. Since the LM4911 does not require  
bootstrap capacitors or snubber networks, it is optimally  
suited for low-power portable systems. In addition, the  
LM4911 may be configured for either single-ended capaci-  
tively coupled outputs or for OCL outputs (patent pending).  
Features  
The LM4911 features a low-power consumption shutdown  
mode and a power mute mode that allows for faster turn on  
time with less than 1mV voltage change at outputs on re-  
lease. Additionally, the LM4911 features an internal thermal  
shutdown protection mechanism.  
n OCL or capacitively coupled outputs (patent pending)  
n External gain-setting capability  
n Available in space-saving MSOP package  
n Ultra low current shutdown mode  
n Mute mode allows fast turn-on (1ms) with less than 1mV  
change on outputs  
The LM4911 is unity gain stable and may be configured with  
external gain-setting resistors.  
n 2V - 5.5V operation  
n Ultra low noise  
Applications  
n Portable CD players  
n PDAs  
n Portable electronics devices  
Block Diagram  
20031478  
FIGURE 1. Block Diagram  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2002 National Semiconductor Corporation  
DS200314  
www.national.com  

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