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LM4906GR PDF预览

LM4906GR

更新时间： 2024-02-01 23:09:07
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器商用集成电路
页数 文件大小 规格书
16页 877K
描述
IC 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA12, MICRO ARRAY, LLP-12, Audio/Video Amplifier

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LM4906GR 技术参数

是否无铅： 含铅生命周期：Active
零件包装代码：BGA包装说明：MICRO ARRAY, LLP-12
针数：12Reach Compliance Code：unknown
风险等级：5.81标称带宽：20 kHz
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：S-PBGA-B12
JESD-609代码：e0长度：2.5 mm
湿度敏感等级：NOT SPECIFIED信道数量：1
功能数量：1端子数量：12
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：1 W封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA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）：NOT SPECIFIED
认证状态：COMMERCIAL座面最大高度：1 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2.6 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：TIN LEAD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：2.5 mm

LM4906GR 数据手册

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January 2005  
LM4906  
1W, Bypass-Capacitor-less Audio Amplifier with Internal  
Selectable Gain  
General Description  
Key Specifications  
The LM4906 is an audio power amplifier primarily designed  
for demanding applications in mobile phones and other por-  
table communication device applications. It is capable of  
delivering 1W of continuous average power to an 8Ω BTL  
load with less than 1% distortion (THD+N) from a +5V power  
supply.  
j
j
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Improved PSRR at 217Hz for +3V  
71dB  
Power Output at +5V, THD+N = 1%, 8Ω  
1.0W (typ)  
Power Output at +3V, THD+N = 1%, 8Ω 390mW (typ)  
Total shutdown power supply current 0.1µA (typ)  
The LM4906 is the first National Semiconductor Boomer  
Power Amplifier that does not require an external PSRR  
bypass capacitor. The LM4906 also has an internal select-  
able gain of either 6dB or 12dB. In addition, no output  
coupling capacitors or bootstrap capacitors are required  
which makes the LM4906 ideally suited for cell phone and  
other low voltage portable applications.  
Features  
n Selectable gain of 6dB (2V/V) or 12dB (4V/V)  
n No output or PSRR bypass capacitors required  
n Improved “Click and Pop” suppression circuitry  
n Very fast turn on time: 5ms (typ)  
n Minimum external components  
n 2.6 - 5.5V operation  
The LM4906 contains advanced pop and click circuitry that  
eliminates noise, which would otherwise occur during  
turn-on and turn-off transitions.  
n BTL output can drive capacitive loads  
n Ultra low current shutdown mode (SD Low)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4906 features a low -power  
consumption shutdown mode (the part is enabled by pulling  
the SD pin high). Additionally, the LM4906 features an inter-  
nal thermal shutdown protection mechanism.  
Applications  
n Portable computers  
n Desktop computers  
n Multimedia monitors  
Typical Application  
200571B9  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2005 National Semiconductor Corporation  
DS200571  
www.national.com  
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