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LM49200TLX

更新时间： 2024-02-06 06:16:57
品牌 Logo 应用领域
美国国家半导体 - NSC 音频控制集成电路消费电路商用集成电路放大器
页数 文件大小 规格书
26页 931K
描述
Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier

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LM49200TLX 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：ActiveReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
Factory Lead Time：16 weeks风险等级：5.19
Is Samacsys：N信道分离：80 dB
商用集成电路类型：VOLUME CONTROL CIRCUITJESD-30 代码：R-XBGA-B20
JESD-609代码：e1湿度敏感等级：1
信道数量：2功能数量：3
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：VFBGA封装等效代码：BGA20,4X5,20
封装形状：RECTANGULAR封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：260电源：3.3 V
认证状态：Not Qualified子类别：Audio/Video Amplifiers
最大压摆率：9.8 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 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
Base Number Matches：1

LM49200TLX 数据手册

 浏览型号LM49200TLX的Datasheet PDF文件第2页浏览型号LM49200TLX的Datasheet PDF文件第3页浏览型号LM49200TLX的Datasheet PDF文件第4页浏览型号LM49200TLX的Datasheet PDF文件第5页浏览型号LM49200TLX的Datasheet PDF文件第6页浏览型号LM49200TLX的Datasheet PDF文件第7页 
May 21, 2009  
LM49200  
Stereo Class AB Audio Subsystem with a True Ground  
Headphone Amplifier  
RL = 8Ω speaker  
520W (typ)  
General Description  
RL = 32Ω headphone  
The LM49200 is a fully integrated audio subsystem with a  
stereo power amplifier capable of delivering 500mW of con-  
tinuous average power per channel into 8Ω with 1% THD+N  
using a 3.3V supply. The LM49200 includes a separate stereo  
headphone amplifier that can deliver 35mW per channel into  
32Ω.  
38mW (typ)  
■ꢀPSRR:  
ꢀꢀVDD = 3.3V, 217Hz ripple, Mono In  
■ꢀShutdown power supply current  
95dB (typ)  
0.02μA (typ)  
The LM49200 has three input channels. A pair of single-end-  
ed inputs and a fully differential input channel. The LM49200  
features a 32-step digital volume control on the input stage  
and an 8-step digital volume control on the headphone output  
stage.  
Features  
Differential mono input and stereo single-ended input  
32-step digital volume control (-80 to +18dB)  
Three independent volume channels (Left, Right, Mono)  
Separate headphone volume control  
■
■
■
■
■
■
The digital volume control and output modes are programmed  
through a two-wire I2C compatible interface that allows flexi-  
bility in routing and mixing audio channels.  
Flexible output for speaker and headphone output  
True Ground headphone amplifier eliminates large DC  
blocking capacitors reducing PCB space and cost  
The LM49200 is designed for cellular phone, PDA, and other  
portable handheld applications. The high level of integration  
minimizes external components. The True Ground head-  
phone amplifier eliminates the physically large DC blocking  
output capacitors reducing required board space and reduc-  
ing cost.  
Receiver pass-through capability  
Soft enable function  
■
■
■
■
■
■
■
■
RF immunity topology  
“Click and Pop” suppression circuitry  
Thermal shutdown protection  
Micro-power shutdown  
Key Specifications  
■ꢀSupply Voltage (VDD  
■ꢀI2C Supply Voltage  
)
2.7V ≤ VDD ≤ 5.5V  
1.7V ≤I2CVDD ≤5.5V  
I2C control interface  
Available in space-saving microSMD package  
■ꢀOutput power at VDD = 5V,  
ꢀꢀ1% THD+N  
Applications  
Portable electronic devices  
■
■
RL = 8Ω speaker  
1.25W (typ)  
38mW (typ)  
Mobile Phones  
RL = 32Ω headphone  
PDAs  
■
■ꢀOutput power at VDD = 3.3V,  
ꢀꢀ1% THD+N  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2009 National Semiconductor Corporation  
300627  
www.national.com  
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