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参数资料
| 型号： | LM4809MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封装： | WAFER |
| 文件页数： | 1/21页 |
| 文件大小： | 946K |
| 代理商： | LM4809MWC |
LM4809
Dual 105mW Headphone Amplifier with Active-Low
Shutdown Mode
General Description
The LM4809 is a dual audio power amplifier capable of
delivering 105mW per channel of continuous average power
into a 16
load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4809 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
The unity-gain stable LM4809 can be configured by external
gain-setting resistors.
The LM4809 features an externally controlled, active-low,
micropower consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
Key Specifications
n
THD+N at 1kHz at 105mW continuous average power
into 16
0.1% (typ)
n
THD+N at 1kHz at 70mW continuous average power
into 32
0.1% (typ)
n
Shutdown Current
0.4A (typ)
Features
n
Active-low shutdown mode
n
’Click and Pop’ reduction circuitry
n
Low shutdown current
n
LLP, MSOP, and SO surface mount packaging
n
No bootstrap capacitors required
n
Unity-gain stable
Applications
n
Headphone Amplifier
n
Personal Computers
n
Microphone Preamplifier
n
PDA’s
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20009001
*Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
June 2002
LM4809
Dual
105mW
Headphone
Amplifier
with
Active-Low
Shutdown
Mode
2002 National Semiconductor Corporation
DS200090
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4809MAX/NOPB | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4809MMXNPAU | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4809MA/NOPB | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4809LD/NOPB | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8 |
| LM4809M | 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4809MX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4810 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 105mW Headphone Amplifier with Active-High Shutdown Mode |
| LM48100Q | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Mono, 1.3W Audio Power Amplifier with Output Fault Detection and Volume Control |
| LM48100QMH | 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 |
| LM48100QMH/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 |
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