參數(shù)資料
型號(hào)： LM4911MM
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output
中文描述： 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10
封裝： MSOP-10
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 923K
代理商： LM4911MM
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
suited for low-power portable systems. In addition, the
LM4911 may be configured for either single-ended capaci-
tively coupled 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 re-
lease. Additionally, the LM4911 features an internal thermal
shutdown protection mechanism.
The LM4911 is unity gain stable and may be configured with
external gain-setting resistors.
Key Specifications
n
PSRR at 217 Hz and 1kHz
n
Output Power at 1kHz with V
DD
= 2.4V, 1% THD+N into
a 16
load
n
Output Power at 1kHz with V
DD
= 3V, 1% THD+N into a
16
load
n
Shutdown Current
n
Output Voltage change on release from Shutdown
V
DD
= 2.4V, R
L
= 16
(C-Coupled)
n
Mute Current
65dB (typ)
25mW (typ)
40mW (typ)
2.0μA (max)
1mV (max)
100μA (max)
Features
n
OCL or capacitively coupled outputs (patent pending)
n
External gain-setting capability
n
Available in space-saving MSOP package
n
Ultra low current shutdown mode
n
Mute mode allows fast turn-on (1ms) with less than 1mV
change on outputs
n
2V - 5.5V operation
n
Ultra low noise
Applications
n
Portable CD players
n
PDAs
n
Portable electronics devices
Block Diagram
Boomer
is a registered trademark of National Semiconductor Corporation.
20031478
FIGURE 1. Block Diagram
July 2002
L
O
2002 National Semiconductor Corporation
DS200314
www.national.com
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(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
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(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
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(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
LM4911QMM/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
LM4911QMMX/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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