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參數資料
| 型號： | LM4809 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| 中文描述： | 雙105mW耳機放大器的有源低關斷模式 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 903K |
| 代理商： | LM4809 |
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
n
THD+N at 1kHz at 70mW continuous average power
into 32
n
Shutdown Current
0.1% (typ)
0.1% (typ)
0.4μA (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
November 2002
L
2002 National Semiconductor Corporation
DS200090
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4809MA | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4809MM | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4858MM | Mono 1.5 W / Stereo 300mW Power Amplifier |
| LM4858 | Mono 1.5 W / Stereo 300mW Power Amplifier |
| LM4858LD | Mono 1.5 W / Stereo 300mW Power Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4809LD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4809LD/NOPB | 功能描述:IC AMP AUDIO PWR .105W STER 8LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4809LDBD | 功能描述:BOARD EVALUATION LM4809LD RoHS:否 類別:編程器，開發系統 >> 評估板 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| 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 |
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