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LM4857ITL/NOPB PDF预览

LM4857ITL/NOPB

更新时间: 2024-02-22 19:57:40
品牌 Logo 应用领域
美国国家半导体 - NSC 商用集成电路
页数 文件大小 规格书
37页 1796K
描述
IC SPECIALTY CONSUMER CIRCUIT, PBGA30, MICRO SMD-30, Consumer IC:Other

LM4857ITL/NOPB 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA30,5X6,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.27商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:R-PBGA-B30JESD-609代码:e1
长度:2.949 mm湿度敏感等级:1
功能数量:1端子数量:30
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:BGA30,5X6,20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:3/5 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:21 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:40
宽度:2.543 mmBase Number Matches:1

LM4857ITL/NOPB 数据手册

 浏览型号LM4857ITL/NOPB的Datasheet PDF文件第2页浏览型号LM4857ITL/NOPB的Datasheet PDF文件第3页浏览型号LM4857ITL/NOPB的Datasheet PDF文件第4页浏览型号LM4857ITL/NOPB的Datasheet PDF文件第5页浏览型号LM4857ITL/NOPB的Datasheet PDF文件第6页浏览型号LM4857ITL/NOPB的Datasheet PDF文件第7页 
June 2005  
LM4857  
Stereo 1.2W Audio Sub-system with 3D Enhancement  
General Description  
Key Specifications  
The LM4857 is an integrated audio sub-system designed for  
stereo cell phone applications. Operating on a 3.3V supply, it  
combines a stereo speaker amplifier delivering 495mW per  
channel into an 8load, a stereo headphone amplifier de-  
livering 33mW per channel into a 32load, a mono earpiece  
amplifier delivering 43mW into a 32load, and a line output  
for an external powered handsfree speaker. It integrates the  
audio amplifiers, volume control, mixer, power management  
control, and National 3D enhancement all into a single pack-  
age. In addition, the LM4857 routes and mixes the stereo  
and mono inputs into 16 distinct output modes. The LM4857  
is controlled through an I2C compatible interface. Other fea-  
tures include an ultra-low current shutdown mode and ther-  
mal shutdown protection.  
j
POUT, Stereo Loudspeakers, 4, 5V,  
1% THD+N (LM4857SP)  
1.6W (typ)  
1.2W (typ)  
j
POUT, Stereo Loudspeakers, 8, 5V,  
1% THD+N  
j
POUT, Stereo Headphones, 32, 5V,  
1% THD+N  
75mW (typ)  
100mW (typ)  
495mW (typ)  
33mW (typ)  
j
POUT, Mono Earpiece, 32, 5V,  
1% THD+N  
j
POUT, Stereo Loudspeakers, 8, 3.3V,  
1% THD+N  
j
POUT, Stereo Headphones, 32, 3.3V,  
1% THD+N  
Boomer audio power amplifiers are designed specifically to  
provide high quality output power with a minimal amount of  
external components.  
j
POUT, Mono Earpiece, 32, 3.3V,  
1% THD+N  
43mW (typ)  
0.06µA (typ)  
The LM4857 is available in a 30-bump ITL package and a  
28–lead LLP package.  
j
Shutdown Current  
Features  
n Stereo speaker amplifier  
n Stereo headphone amplifier  
n Mono earpiece amplifier  
n Mono Line Output for external handsfree carkit  
n Independent Left, Right, and Mono volume controls  
n National 3D enhancement  
n I2C compatible interface  
n Ultra low shutdown current  
n Click and Pop Suppression circuit  
n 16 distinct output modes  
n Thermal Shutdown Protection  
n Available in micro SMD and LLP packages  
Applications  
n Cell Phones  
n PDAs  
n Portable Gaming Devices  
n Internet Appliances  
n Portable DVD/CD/AAC/MP3 players  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2005 National Semiconductor Corporation  
DS200797  
www.national.com  

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