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LM49350RL/NOPB

更新时间： 2024-09-25 13:09:23
品牌 Logo 应用领域
美国国家半导体 - NSC 解码器编解码器放大器
页数 文件大小 规格书
104页 3383K
描述
IC SPECIALTY CONSUMER CIRCUIT, PBGA36, 3.5 X 3.5 MM, ROHS COMPLIANT, MICRO SMDXT-36, Consumer IC:Other

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LM49350RL/NOPB 技术参数

是否Rohs认证：符合生命周期：Transferred
包装说明：3.5 X 3.5 MM, ROHS COMPLIANT, MICRO SMDXT-36Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.04Is Samacsys：N
其他特性：ALSO REQUIRES 1.7V TO 2.0V SUPPLY商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：S-PBGA-B36JESD-609代码：e1
长度：3.459 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：1.8,3.3 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：3.459 mm
Base Number Matches：1

LM49350RL/NOPB 数据手册

 浏览型号LM49350RL/NOPB的Datasheet PDF文件第2页浏览型号LM49350RL/NOPB的Datasheet PDF文件第3页浏览型号LM49350RL/NOPB的Datasheet PDF文件第4页浏览型号LM49350RL/NOPB的Datasheet PDF文件第5页浏览型号LM49350RL/NOPB的Datasheet PDF文件第6页浏览型号LM49350RL/NOPB的Datasheet PDF文件第7页 
May 29, 2009  
LM49350  
High Performance Audio Codec Sub-System with a  
Ground-Referenced Stereo Headphone Amplifier & an  
Ultra Low EMI Class D Loudspeaker Amplifier with Dual  
I2S/PCM Digital Audio Interfaces  
SNR (Stereo DAC at 48kHz)  
SNR (Stereo ADC at 48kHz)  
Shutdown Current  
PSRR at 217 Hz, A_VDD = 3.3V, (HP from  
AUX)  
96dB (typ)  
■
■
■
■
1.0 General Description  
94dB (typ)  
2.3µA (typ)  
97dB (typ)  
The LM49350 is a high performance audio subsystem that  
supports both analog and digital audio functions. The  
LM49350 includes a high quality stereo DAC, a high quality  
stereo ADC, a stereo headphone amplifier that supports  
ground referenced output cap-less operation, a dual mode  
earpiece speaker amplifier, and a low EMI Class D loud-  
speaker amplifier. It is designed for demanding applications  
in mobile phones and other portable devices.  
4.0 Features  
High performance 96dB SNR stereo DAC  
■
■
■
■
■
■
■
■
High performance 94dB SNR stereo ADC  
The LM49350 features dual bi-directional I2S or PCM audio  
interfaces for full range audio and an I2C compatible interface  
for control. The stereo DAC path features an SNR of 96dB  
with 24-bit 48 kHz input. The headphone amplifier delivers  
69mWRMS (typ) to a 32Ω single-ended stereo load with less  
than 1% distortion (THD+N) when A_VDD = 3.3V. The ear-  
piece speaker amplifier delivers 58mWRMS (typ) to a 32Ω  
bridged-tied load with less than 1% distortion (THD+N) when  
A_VDD = 3.3V. The loudspeaker amplifier delivers up to  
495mW into an 8Ω load with less than 1% distortion when  
LS_VDD = 3.3V and up to 1.2W when LS_VDD = 5.0V.  
Up to 192kHz stereo audio playback  
Up to 48kHz stereo recording  
Dual bidirectional I2S or PCM compatible audio interfaces  
Read/write I2C compatible control interface  
Flexible digital mixer with sample rate conversion  
Dual sigma-delta PLLs for operation from any clock at any  
sample rate  
Digital 3D stereo enhancement  
■
■
■
Dual 5 band parametric equalizers  
Cascadable DSP effects that allow 10 band parametric  
equalization  
ALC/Compressor/Limiter on both DAC and ADC paths  
The LM49350 employs advanced techniques to reduce pow-  
er consumption, to reduce controller overhead, to speed de-  
velopment time, and to eliminate click and pop. Boomer audio  
power amplifiers were designed specifically to provide high  
quality output power with a minimal amount of external com-  
ponents. It is therefore ideally suited for mobile phone and  
other low voltage applications where minimal power con-  
sumption, PCB area and cost are primary requirements.  
■
■
Ultra low EMI, Class D loudspeaker amplifier with spread  
spectrum control  
Ground referenced output cap-less headphone amplifier  
operation  
Earpiece speaker amplifier with reduced power  
consumption mode for mono differential line out  
applications  
■
■
2.0 Applications  
Stereo auxiliary inputs or mono differential input  
Smart Phones  
■
■
■
■
■
■
■
Differential stereo microphone inputs with single-ended  
option  
Automatic level control for digital audio inputs, stereo  
microphone inputs, and stereo auxiliary inputs  
Mobile Phones and VOIP Phones  
Portable GPS Navigator and Portable Gaming Devices  
Portable DVD/CD/AAC/MP3/MP4 Players  
Digital Cameras/Camcorders  
■
Flexible audio routing from input to output  
■
■
■
■
■
16 Step volume control for microphones with 2dB steps  
32 Step volume control for auxiliary inputs in 1.5dB steps  
Micro-power shutdown mode  
3.0 Key Specifications  
PHP at A_VDD = 3.3V, Stereo 32Ω, 1% THD 69mW/ch (typ)  
■
■
■
■
■
PLS at LS_VDD = 5V, 8Ω, 1% THD  
PLS at LS_VDD = 4.2V, 8Ω, 1% THD  
PLS at LS_VDD = 3.3V, 8Ω, 1% THD  
PEP at A_VDD = 3.3V, 32Ω BTL, 1% THD  
1.2W (typ)  
825mW (typ)  
495mW (typ)  
58mW (typ)  
Available in the 3.5 x 3.5 mm 36 bump micro SMD package  
■ꢀSupply Voltage Range  
ꢀꢀD_VDD = 1.7V to 2.0V  
ꢀꢀLS_VDD and A_VDD = 2.7V to 5.5V  
ꢀꢀI/O_VDD = 1.6V to 4.5V  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2009 National Semiconductor Corporation  
201941  
www.national.com  
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