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参数资料
| 型号： | LM4912MM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | MSOP-10 |
| 文件页数： | 1/16页 |
| 文件大小： | 490K |
| 代理商： | LM4912MM/NOPB |
June 17, 2008
LM4912
Stereo 40mW Low Noise Headphone Amplifier
General Description
The LM4912 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 form 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 LM4912 does not require
bootstrap capacitors or snubber networks, it is optimally suit-
ed for low-power portable systems.
The LM4912 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 LM4912 features an internal thermal shut-
down protection mechanism.
The LM4912 is unity gain stable and may be configured with
external gain-setting resistors.
Key Specifications
■ PSRR at 217 Hz 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
1.0A (max)
■ Output Voltage change on release from Shutdown
V
DD = 2.4V, RL = 16
1mV
(max)
■ Output Noise, 20Hz to 20kHz, A-weighted
10V (typ)
Features
■ External gain-setting capability
■ Available in space-saving MSOP package
■ Ultra low current shutdown mode
■ Mute mode allows fast turn-on (10ms) with less than 1mV
change on outputs
■ 2.0V - 5.5V operation
■ Ultra low noise
■ Operation at low supply voltages
Applications
■ Portable CD players
■ PDAs
■ Portable electronics devices
Typical Application
20048180
FIGURE 1. Typical Capacitive Coupled Output Configuration Circuit
Boomer is a registered trademark of National Semiconductor Corporation.
2008 National Semiconductor Corporation
200481
www.national.com
LM4912
Stereo
40mW
Low
Noise
Headphone
Amplifier
相关PDF资料 |
PDF描述 |
|---|---|
| LM581JH | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, MBCY3 |
| LM581TH | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, MBCY3 |
| LM6181IM/NOPB | VIDEO AMPLIFIER, PDSO16 |
| LM8500HVA9/NOPB | SPECIALTY CONSUMER CIRCUIT, PQCC44 |
| LM8500IMT9/NOPB | SPECIALTY CONSUMER CIRCUIT, PDSO48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4912MMX/NOPB | 功能描述:IC AMP AUDIO PWR .145W AB 10MSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4913 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:2W Monaural, 90mW Stereo Headphone Audio Amplifier |
| LM4913A WAF | 制造商:Texas Instruments 功能描述: |
| LM4913MH | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4913MH/NOPB | 功能描述:IC AMP AUDIO MONO/STER 10TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
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