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LM4940TS PDF预览

LM4940TS

更新时间: 2024-01-09 05:56:40
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器商用集成电路
页数 文件大小 规格书
14页 1030K
描述
IC 4.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PSSO9, PLASTIC, TO-263, 9 PIN, Audio/Video Amplifier

LM4940TS 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:D2PAK
包装说明:, SMSIP9H,.5,38针数:4
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.2
标称带宽:20 kHz商用集成电路类型:AUDIO AMPLIFIER
JESD-30 代码:R-PSSO-G9JESD-609代码:e0
长度:10.16 mm湿度敏感等级:3
信道数量:2功能数量:1
端子数量:9最高工作温度:85 °C
最低工作温度:-40 °C标称输出功率:4.2 W
封装主体材料:PLASTIC/EPOXY封装等效代码:SMSIP9H,.5,38
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):235电源:12 V
认证状态:Not Qualified座面最大高度:4.62 mm
子类别:Audio/Video Amplifiers最大压摆率:40 mA
最大供电电压 (Vsup):16 V最小供电电压 (Vsup):10 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:0.97 mm端子位置:SINGLE
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:8.69 mm
Base Number Matches:1

LM4940TS 数据手册

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April 2005  
LM4940  
6W Stereo Audio Power Amplifier  
General Description  
Key Specifications  
The LM4940 is a dual audio power amplifier primarily de-  
signed for demanding applications in flat panel monitors and  
TV’s. It is capable of delivering 6 watts per channel to a 4  
load with less than 10% THD+N while operating on a  
14.4VDC power supply.  
j
Quiscent Power Supply Current  
40mA (max)  
j
POUT (SE)  
VDD = 14.4V, RL = 4, 10% THD+N  
Shutdown current  
6W (typ)  
j
40µA (typ)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4940 does not require boot-  
strap capacitors or snubber circuits. Therefore, it is ideally  
suited for display applications requiring high power and mini-  
mal size.  
Features  
n Pop & click circuitry eliminates noise during turn-on and  
turn-off transitions  
n Low current, active-low shutdown mode  
n Low quiescent current  
n Stereo 6W output, RL = 4Ω  
n Short circuit protection  
n Unity-gain stable  
n External gain configuration capability  
The LM4940 features a low-power consumption active-low  
shutdown mode. Additionally, the LM4940 features an inter-  
nal thermal shutdown protection mechanism along with short  
circuit protection.  
The LM4940 contains advanced pop & click circuitry that  
eliminates noises which would otherwise occur during  
turn-on and turn-off transitions.  
Applications  
n Flat Panel Monitors  
n Flat Panel TV’s  
The LM4940 is a unity-gain stable and can be configured by  
external gain-setting resistors.  
n Computer Sound Cards  
Typical Application  
20075672  
FIGURE 1. Typical Stereo Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2005 National Semiconductor Corporation  
DS200756  
www.national.com  

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