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LM4857ITL/NOPB

更新时间： 2024-01-29 10:38:54
品牌 Logo 应用领域
德州仪器 - TI 商用集成电路
页数 文件大小 规格书
39页 3605K
描述
SPECIALTY CONSUMER CIRCUIT, PBGA30, MICRO SMD-30

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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 
LM4857  
www.ti.com  
SNAS229I –OCTOBER 2003–REVISED APRIL 2013  
LM4857  
Stereo 1.2W Audio Sub-system with 3D  
Enhancement  
Check for Samples: LM4857  
1
FEATURES  
KEY SPECIFICATIONS  
2
•
Stereo Speaker Amplifier  
Stereo Headphone Amplifier  
Mono Earpiece Amplifier  
•
•
•
•
•
•
•
•
POUT, Stereo Loudspeakers, 4Ω, 5V, 1%  
THD+N (LM4857SP) 1.6W (typ)  
•
•
•
POUT, Stereo Loudspeakers, 8Ω, 5V, 1%  
THD+N 1.2W (typ)  
Mono Line Output for External Handsfree  
Carkit  
POUT, Stereo Headphones, 32Ω, 5V, 1%  
THD+N 75mW (typ)  
•
Independent Left, Right, and Mono Volume  
Controls  
POUT, Mono Earpiece, 32Ω, 5V, 1% THD+N  
100mW (typ)  
•
•
•
•
•
•
•
TI 3D Enhancement  
I2C Compatible Interface  
POUT, Stereo Loudspeakers, 8Ω, 3.3V, 1%  
THD+N 495mW (typ)  
Ultra low Shutdown Current  
Click and Pop Suppression Circuit  
16 distinct Output Modes  
POUT, Stereo Headphones, 32Ω, 3.3V, 1%  
THD+N 33mW (typ)  
POUT, Mono Earpiece, 32Ω, 3.3V, 1% THD+N  
43mW (typ)  
Thermal Shutdown Protection  
Available in DSBGA and UQFN packages  
Shutdown Current 0.06μA (typ)  
APPLICATIONS  
DESCRIPTION  
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 8Ω load, a stereo headphone amplifier delivering  
33mW per channel into a 32Ω load, a mono earpiece  
amplifier delivering 43mW into a 32Ω load, and a line  
output for an external powered handsfree speaker. It  
integrates the audio amplifiers, volume control, mixer,  
power management control, and TI 3D enhancement  
all into a single package. 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 features  
include an ultra-low current shutdown mode and  
thermal shutdown protection.  
•
•
•
•
•
Cell Phones  
PDAs  
Portable Gaming Devices  
Internet Appliances  
Portable DVD/CD/AAC/MP3 players  
Boomer audio power amplifiers are designed  
specifically to provide high quality output power with a  
minimal amount of external components.  
The LM4857 is available in a 30-bump DSBGA  
package and a 28–lead UQFN package.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
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