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LM49321RL

更新时间： 2024-02-03 00:40:32
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器射频
页数 文件大小 规格书
42页 1463K
描述
Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression

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LM49321RL 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：BGA
包装说明：VFBGA, BGA36,6X6,20针数：36
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.65
其他特性：ALSO REQUIRES 2.7V TO 4V DIGITAL SUPPLY商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：R-PBGA-B36长度：3.495 mm
湿度敏感等级：1功能数量：1
端子数量：36最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA封装等效代码：BGA36,6X6,20
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：3/3.3,3/5 V
认证状态：Not Qualified座面最大高度：0.725 mm
子类别：Audio/Video Amplifiers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：3.238 mm
Base Number Matches：1

LM49321RL 数据手册

 浏览型号LM49321RL的Datasheet PDF文件第2页浏览型号LM49321RL的Datasheet PDF文件第3页浏览型号LM49321RL的Datasheet PDF文件第4页浏览型号LM49321RL的Datasheet PDF文件第5页浏览型号LM49321RL的Datasheet PDF文件第6页浏览型号LM49321RL的Datasheet PDF文件第7页 
August 31, 2009  
LM49321  
Audio Sub-System with Stereo DAC, Mono Class AB  
Loudspeaker Amplifier, OCL/SE Stereo Headphone Output  
and RF Suppression  
General Description  
Key Specifications  
The LM49321 is an integrated audio sub-system designed for  
mono voice, stereo music cell phones connecting to base  
band processors with mono differential analog voice paths.  
Operating on a 3.3V supply, it combines a mono speaker am-  
plifier delivering 520mW into an 8Ω load, a stereo headphone  
amplifier delivering 36mW per channel into a 32Ω load, and  
a mono earpiece amplifier delivering 55mW into a 32Ω load.  
The headphone amplifier can be configured for output capac-  
itor-less (OCL) or single-ended (SE) mode. It integrates the  
audio amplifiers, volume control, mixer, and power manage-  
ment control all into a single package. In addition, the  
LM49321 routes and mixes the single-ended stereo and dif-  
ferential mono inputs into multiple distinct output modes. The  
LM49321 features an I2S serial interface for full range audio  
and an I2C or SPI compatible interface for control. The full  
range music path features an SNR of 85dB with up to 192kHz  
playback.  
■ꢀPOUT LS, 8Ω, 3.3V, 1% THD+N  
■ꢀPOUT HP, 32Ω, 3.3V, 1% THD+N  
520mW (typ)  
36mW (typ)  
■ꢀPOUT Mono Earpiece, 32Ω  
1% THD+N  
55mW (typ)  
0.6µA (typ)  
85dB (typ)  
■ꢀShutdown current  
■ꢀSNR (DAC + Amplifier)  
Features  
18-bit stereo DAC with up to 192kHz sampling rate  
■
■
■
■
■
■
■
■
Multiple distinct output modes  
Mono class AB speaker amplifier  
Stereo OCL/SE headphone amplifier  
Mono earpiece amplifier  
Boomer audio power amplifiers are designed specifically to  
provide high quality output power with a minimal amount of  
external components.  
Differential mono analog input  
Single-ended analog inputs  
Independent loudspeaker, headphone and mono earpiece  
volume controls  
I2C/SPI (selectable) compatible interface  
■
■
■
Ultra low shutdown current  
Click and Pop Suppression circuit  
Applications  
Cell Phones  
■
■
■
■
PDAs  
Laptop computers  
Portable devices  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2009 National Semiconductor Corporation  
300618  
www.national.com  
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