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LM4846TL

更新时间： 2024-11-08 23:16:47
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
19页 683K
描述
Output Capacitor-less Audio Subsystem with Programmable National 3D

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中文翻译

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LM4846TL 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：VFBGA, BGA25,5X5,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.52标称带宽：20 kHz
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：R-XBGA-B25
JESD-609代码：e1长度：2.543 mm
湿度敏感等级：1信道数量：3
功能数量：1端子数量：25
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：0.5 W封装主体材料：UNSPECIFIED
封装代码：VFBGA封装等效代码：BGA25,5X5,20
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：3.3/5 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：NOT SPECIFIED
宽度：2.517 mmBase Number Matches：1

LM4846TL 数据手册

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December 2005  
LM4846  
Output Capacitor-less Audio Subsystem with  
Programmable National 3D  
General Description  
Key Specifications  
The LM4846 is an audio power amplifier capable of deliver-  
ing 500mW of continuous average power into a mono 8Ω  
bridged-tied load (BTL) with 1% THD+N, 25mW per channel  
of continuous average power into stereo 32Ω single-ended  
(SE) loads with 1% THD+N, or an output capacitor-less  
(OCL) configuration with identical specification as the SE  
configuration, from a 3.3V power supply.  
j
THD+N at 1kHz, 500mW  
into 8Ω BTL (3.3V)  
1.0% (typ)  
j
THD+N at 1kHz, 30mW  
into 32Ω SE (3.3V)  
1.0% (typ)  
2.7 to 5.5V  
2.2 to 5.5V  
j
j
Single Supply Operation (VDD  
I2C/SPI Single Supply Operation  
)
The LM4846 features a 32-step digital volume control and  
eight distinct output modes. The digital volume control, 3D  
enhancement, and output modes (mono/SE/OCL) are pro-  
grammed through a two-wire I2C or a three-wire SPI com-  
patible interface that allows flexibility in routing and mixing  
audio channels. The LM4846 has three input channels: one  
pair for a two-channel stereo signal and the third for a  
single-channel mono input.  
Features  
n I2C/SPI Control Interface  
n I2C/SPI programmable National 3D Audio  
n I2C/SPI controlled 32 step digital volume control (-54dB  
to +18dB)  
n Three independent volume channels (Left, Right, Mono)  
n Eight distinct output modes  
n microSMD surface mount packaging  
n “Click and Pop” suppression circuitry  
n Thermal shutdown protection  
The LM4846 is designed for cellular phone, PDA, and other  
portable handheld applications. It delivers high quality output  
power from a surface-mount package and requires only  
seven external components in the OCL mode (two additional  
components in SE mode).  
n Low shutdown current (0.1uA, typ)  
Applications  
n Moblie Phones  
n PDAs  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2005 National Semiconductor Corporation  
DS201668  
www.national.com  
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