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参数资料
| 型号： | LM4906LD/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| 封装： | LLP-10 |
| 文件页数： | 1/16页 |
| 文件大小： | 888K |
| 代理商： | LM4906LD/NOPB |
LM4906
1W, Bypass-Capacitor-less Audio Amplifier with Internal
Selectable Gain
General Description
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 8
BTL
load with less than 1% distortion (THD+N) from a +5V power
supply.
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.
The LM4906 contains advanced pop and click circuitry that
eliminates noise, which would otherwise occur during
turn-on and turn-off transitions.
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.
Key Specifications
j Improved PSRR at 217Hz for +3V
71dB
j Power Output at +5V, THD+N = 1%, 8
1.0W (typ)
j Power Output at +3V, THD+N = 1%, 8
390mW (typ)
j Total shutdown power supply current
0.1A (typ)
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
n
BTL output can drive capacitive loads
n
Ultra low current shutdown mode (SD Low)
Applications
n
Portable computers
n
Desktop computers
n
Multimedia monitors
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
200571B9
FIGURE 1. Typical Audio Amplifier Application Circuit
January 2005
LM4906
1W
,
Bypass-Capacitor-less
Audio
Amplifier
with
Internal
Selectable
Gain
2005 National Semiconductor Corporation
DS200571
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4906GR/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA12 |
| LM4907LD | 1.07 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8 |
| LM4908MM/NOPB | 0.157 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4908MA/NOPB | 0.157 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4908LQ/NOPB | 0.157 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4906LDX | 功能描述:IC AMP AUDIO PWR 1W MONO 10LLP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4906LDX/NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 1W Class-AB 10-Pin LLP EP T/R |
| LM4906MM | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4906MM/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4906MMBD | 功能描述:音频 IC 开发工具 LM4906MM EVAL BOARD RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
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