參數(shù)資料
型號(hào)： LM4809MMXNPAU
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝： MSOP-8
文件頁(yè)數(shù)： 1/21頁(yè)
文件大?。?/td> 971K
代理商： LM4809MMXNPAU
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
April 2004
LM4809
Dual
105mW
Headphone
Amplifier
with
Active-Low
Shutdown
Mode
2004 National Semiconductor Corporation
DS200090
www.national.com
相關(guān)PDF資料
PDF描述
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
LM4810MA/NOPB 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
LM4810LD/NOPB 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4809MX 制造商:Rochester Electronics LLC 功能描述:- Bulk
LM4810 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Dual 105mW Headphone Amplifier with Active-High Shutdown Mode
LM48100Q 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Mono, 1.3W Audio Power Amplifier with Output Fault Detection and Volume Control
LM48100QMH 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM48100QMH/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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