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LM4937TL/NOPB PDF预览

LM4937TL/NOPB

更新时间: 2024-11-25 19:56:27
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
42页 1156K
描述
IC SPECIALTY CONSUMER CIRCUIT, PBGA36, ROHS COMPLIANT, MICRO, SMD-36, Consumer IC:Other

LM4937TL/NOPB 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA36,6X6,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.05其他特性:ALSO REQUIRES 2.7V TO 4V SUPPLY
商用集成电路类型:CONSUMER CIRCUITJESD-30 代码:S-PBGA-B36
JESD-609代码:e1长度:3.51 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:SQUARE封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:3.3,3/5 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:3.255 mmBase Number Matches:1

LM4937TL/NOPB 数据手册

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November 1, 2007  
LM4937  
Audio Sub-System with OCL Stereo Headphone Output  
and RF Suppression  
General Description  
Key Specifications  
The LM4937 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 8load, a stereo headphone  
amplifier delivering 36mW per channel into a 32load, and  
a mono earpiece amplifier delivering 55mW into a 32load.  
It integrates the audio amplifiers, volume control, mixer, and  
power management control all into a single package. In ad-  
dition, the LM4937 routes and mixes the single-ended stereo  
and differential mono inputs into multiple distinct output  
modes. The LM4937 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 a  
192kHz playback.  
■ꢀPOUT, BTL, 8, 3.3V, 1%  
■ꢀPOUT H/P, 32, 3.3V, 1%  
■ꢀPOUT Mono Earpiece, 32Ω, 1%  
■ꢀShutdown current  
520mW (typ)  
36mW (typ)  
55mW (typ)  
0.6µA (typ)  
85dB (typ)  
■ꢀSNR (DAC + Amplifier)  
Features  
18-bit stereo DAC  
Multiple distinct output modes  
Mono speaker amplifier  
Stereo headphone amplifier  
Boomer audio power amplifiers are designed specifically to  
provide high quality output power with a minimal amount of  
external components.  
Mono earpiece amplifier  
Differential mono analog input  
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  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
202020  
www.national.com  

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