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參數資料
型號: LM4809LD/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8
封裝: LLP-8
文件頁數: 1/21頁
文件大小: 971K
代理商: LM4809LD/NOPB
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PDF資料
PDF描述
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
LM4810M 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
LM4816MT/NOPB 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
相關代理商/技術參數
參數描述
LM4809LDX 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4809LDX/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4809LQ 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4809LQ/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4809LQBD 功能描述:音頻 IC 開發工具 LM4809LQ EVAL BOARD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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