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參數(shù)資料
| 型號： | LM4911LD/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| 封裝： | LLP-10 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 621K |
| 代理商： | LM4911LD/NOPB |
July 30, 2008
LM4911
Stereo 40mW Low Noise Headphone Amplifier with
Selectable Capacitive Coupled or OCL Output
General Description
The LM4911 is an stereo audio power amplifier capable of
delivering 40mW per channel of continuous average power
into a 16
load or 25mW per channel into a 32 load at 1%
THD+N from a 3V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4911 does not require
bootstrap capacitors or snubber networks, it is optimally suit-
ed for low-power portable systems. In addition, the LM4911
may be configured for either single-ended capacitively cou-
pled outputs or for OCL outputs (patent pending).
The LM4911 features a low-power consumption shutdown
mode and a power mute mode that allows for faster turn on
time with less than 1mV voltage change at outputs on release.
Additionally, the LM4911 features an internal thermal shut-
down protection mechanism.
The LM4911 is unity gain stable and may be configured with
external gain-setting resistors.
Key Specifications
■ PSRR at 217Hz and 1kHz
65dB (typ)
■ Output Power at 1kHz with V
DD = 2.4V, 1% THD
+N into a 16
load
25mW
(typ)
■ Output Power at 1kHz with V
DD = 3V, 1% THD
+N into a 16
load
40mW
(typ)
■ Shutdown Current
2.0A (max)
■ Output Voltage change on release from Shutdown
V
DD = 2.4V, RL = 16 (C-Coupled)
1mV
(max)
■ Mute Current
100A (max)
Features
■ OCL or capacitively coupled outputs (patent pending)
■ External gain-setting capability
■ Available in space-saving MSOP and LD packages
■ Ultra low current shutdown mode
■ Mute mode allows fast turn-on (1ms) with less than 1mV
change on outputs
■ 2V - 5.5V operation
■ Ultra low noise
Applications
■ Portable CD players
■ PDAs
■ Portable electronics devices
Block Diagram
20031478
FIGURE 1. Block Diagram
Boomer is a registered trademark of National Semiconductor Corporation.
2008 National Semiconductor Corporation
200314
www.national.com
LM4911
Stereo
40mW
Low
Noise
Headphone
Amplifier
with
Selectable
Capacitive
Coupled
or
OCL
Output
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4911LDX | 功能描述:IC AMP AUDIO PWR .145W AB 10LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)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(shù)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) |
| LM4911MM | 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 |
| LM4911MM/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 |
| LM4911MMX | 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 |
| LM4911MMX/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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