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LM48821TLX

更新时间： 2024-11-04 20:59:55
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
22页 545K
描述
IC 0.053 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA16, BGA-16, Audio/Video Amplifier

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LM48821TLX 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：5.45标称带宽：22 kHz
商用集成电路类型：VOLUME CONTROL CIRCUITJESD-30 代码：S-XBGA-B16
JESD-609代码：e1长度：1.97 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：0.053 W封装主体材料：UNSPECIFIED
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：4.5 mA
最大供电电压 (Vsup)：4 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/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：1.97 mm
Base Number Matches：1

LM48821TLX 数据手册

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June 2007  
LM48821  
Direct Coupled, Ultra Low Noise, 52mW Differential Input  
Stereo Headphone Amplifier with I2C Volume Control  
General Description  
Key Specifications  
With its directly-coupled output technology, the LM48821 is a  
variable gain audio power amplifier capable of delivering  
52mWRMS per channel into a 16Ω single-ended load with less  
than 1% THD+N from a 3V power supply. The I2C volume  
control has a range of –76dB to 18dB.  
■ꢀImproved PSRR at 217Hz  
■ꢀStereo Output Power at VDD = 3V,  
RL = 16Ω, THD+N = 1%  
82dB (typ)  
52mW (typ)  
■ꢀMono Output Power at VDD = 3V,  
RL = 16Ω, THD+N = 1%  
The LM48821's Tru-GND technology utilizes advanced  
charge pump technology to generate the LM48821’s negative  
supply voltage. This eliminates the need for output-coupling  
capacitors typically used with single-ended loads.  
93mW (typ)  
■ꢀShutdown current  
0.1μA (typ)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM48821 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.  
Features  
Ground referenced outputs  
■
■
■
Differential Inputs  
I2C Volume and mode controls  
Available in space-saving micro SMD package  
Ultra low current shutdown mode  
■
■
■
The LM48821 incorporates selectable low-power consump-  
tion shutdown and channel select modes.  
Advanced output transient suppression circuitry  
eliminates noises during turn-on and turn-off transitions  
The LM48821 contains advanced output transient suppres-  
sion circuitry that eliminates noises which would otherwise  
occur during turn-on and turn-off transitions.  
2.0V to 4.0V operation (PVDD and SVDD  
1.8 to 4.0V operation (I2CVDD  
)
■
■
■
)
No output coupling capacitors, snubber networks,  
bootstrap capacitors, or gain-setting resistors required  
Applications  
Notebook PCs  
■
■
■
■
■
■
Desktop PCs  
Mobile Phones  
PDAs  
Portable Electronic Devices  
MP3 Players  
Boomer® is a registered trademark of National Semiconductor Corporation.  
Tru-GND is a trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
201842  
www.national.com  
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