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LM4982TL

更新时间： 2024-11-25 04:20:07
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
21页 1569K
描述
Ground-Referenced, Ultra Low Noise, 80mW Stereo Headphone Amplifier with IntelliSense and I2C Volume

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中文翻译

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LM4982TL 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：VFBGA, BGA16,4X4,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.53标称带宽：22 kHz
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：S-PBGA-B16
JESD-609代码：e1长度：1.965 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：0.051 W封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA封装等效代码：BGA16,4X4,20
封装形状：SQUARE封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
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：0.675 mm
子类别：Audio/Video Amplifiers最大压摆率：11.5 mA
最大供电电压 (Vsup)：4 V最小供电电压 (Vsup)：1.6 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Silver/Copper (Sn/Ag/Cu)端子形式：BALL
端子节距：0.5 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：1.965 mm
Base Number Matches：1

LM4982TL 数据手册

 浏览型号LM4982TL的Datasheet PDF文件第2页浏览型号LM4982TL的Datasheet PDF文件第3页浏览型号LM4982TL的Datasheet PDF文件第4页浏览型号LM4982TL的Datasheet PDF文件第5页浏览型号LM4982TL的Datasheet PDF文件第6页浏览型号LM4982TL的Datasheet PDF文件第7页 
February 2006  
LM4982  
Ground-Referenced, Ultra Low Noise, 80mW Stereo  
Headphone Amplifier with IntelliSense and I2C Volume  
Control  
General Description  
Key Specifications  
The LM4982 is a ground referenced, variable gain audio  
power amplifier capable of delivering 80mW of continuous  
average power into a 16Ω single-ended load with less than  
1% THD+N from a 3V power supply. The I2C volume control  
allows +18 to -76 dB gain settings.  
j
Improved PSRR at 217Hz  
Stereo Output Power at VDD = 3V,  
RL = 32Ω, THD+N = 1%  
Shutdown current  
66dB  
j
51mW (typ)  
0.1µA (typ)  
j
The LM4982 utilizes advanced charge pump technology to  
generate the LM4982’s negative supply voltage. This elimi-  
nates the need for output-coupling capacitors typically used  
with single-ended loads.  
Features  
n Ground referenced outputs  
n I2C Volume and mode controls  
IntelliSense is a new circuit technology that allows the  
LM4982 to detect whether a mono or stereo headphone plug  
has been inserted into the output jack.  
n Available in space-saving micro SMD package  
n Ultra low current shutdown mode  
n Advanced pop & click circuitry eliminates noises during  
turn-on and turn-off transitions  
n 1.6 – 4.0V operation  
n No output coupling capacitors, snubber networks,  
bootstrap capacitors or gain-setting resistors required  
n Mono/Stereo headphone detect  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4982 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.  
The LM4982 incorporates selectable low-power consump-  
tion shutdown and channel select modes.  
Applications  
n Notebook PCs  
n Desktop PCs  
n Mobile Phones  
n PDAs  
The LM4982 contains advanced pop & click circuitry that  
eliminates noises which would otherwise occur during  
turn-on and turn-off transitions.  
n Portable electronic devices  
n MP3 Players  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2006 National Semiconductor Corporation  
DS201614  
www.national.com  
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