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LM4917MT PDF预览

LM4917MT

更新时间: 2024-01-12 08:38:33
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器
页数 文件大小 规格书
18页 1205K
描述
Ground-Referenced, 95mW Stereo Headphone Amplifier

LM4917MT 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:SON
包装说明:HVSON, SOLCC14,.12,20针数:14
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.64
标称带宽:20 kHz商用集成电路类型:AUDIO AMPLIFIER
JESD-30 代码:R-XDSO-N14JESD-609代码:e0
长度:4 mm湿度敏感等级:1
信道数量:2功能数量:1
端子数量:14最高工作温度:85 °C
最低工作温度:-40 °C标称输出功率:0.095 W
封装主体材料:UNSPECIFIED封装代码:HVSON
封装等效代码:SOLCC14,.12,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:3 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Audio/Video Amplifiers
最大压摆率:20 mA最大供电电压 (Vsup):3.6 V
最小供电电压 (Vsup):1.4 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:NO LEAD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:NOT SPECIFIED
宽度:3 mm

LM4917MT 数据手册

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November 2004  
LM4917  
Ground-Referenced, 95mW Stereo Headphone Amplifier  
General Description  
Key Specifications  
The LM4917 is a stereo, output capacitor-less headphone  
amplifier capable of delivering 95mW of continuous average  
power into a 16load with less than 1% THD+N from a  
single 3V power supply.  
j
Improved PSRR at 1kHz  
Power Output at VDD = 3V,  
RL = 16, THD % 1%  
Shutdown Current  
70dB (typ)  
j
95mW (typ)  
0.01µA (typ)  
j
The LM4917 provides high quality audio reproduction with  
minimal external components. A ground referenced output  
eliminates the output coupling capacitors typically required  
by single-ended loads, reducing component count, cost and  
board space consumption. This makes the LM4917 ideal for  
mobile phones and other portable equipment where board  
space is at a premium. Eliminating the output coupling ca-  
pacitors also improves low frequency response.  
Features  
n Ground referenced outputs  
n High PSRR  
n Available in space-saving TSSOP package  
n Ultra low current shutdown mode  
The LM4917 operates from a single 1.4V to 3.6V power  
supply, features low 0.02% THD+N and 70dB PSRR. Inde-  
pendent right/left channel low-power shutdown controls pro-  
vide power saving flexibility for mono/stereo applications.  
Superior click and pop suppression eliminates audible tran-  
sients during start up and shutdown. Short circuit and ther-  
mal overload protection protects the device during fault con-  
ditions.  
n Improved pop & click circuitry eliminates noises during  
turn-on and turn-off transitions  
n 1.4 – 3.6V operation  
n No output coupling capacitors, snubber networks,  
bootstrap capacitors  
n Shutdown either channel independently  
Applications  
n Notebook PCs  
n Desktop PCs  
n Mobile Phone  
n PDAs  
n Portable electronic devices  
Block Diagram  
200893B8  
FIGURE 1. Circuit Block Diagram  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS200893  
www.national.com  

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