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参数资料
| 型号： | LM4910MMX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.035 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封装： | MSOP-8 |
| 文件页数： | 1/22页 |
| 文件大小： | 828K |
| 代理商： | LM4910MMX/NOPB |
LM4910
Output Capacitor-less Stereo 35mW Headphone
Amplifier
General Description
The LM4910 is an audio power amplifier primarily designed
for headphone applications in portable device applications. It
is capable of delivering 35mW of continuous average power
toa32
load with less than 1% distortion (THD+N) from a
3.3V
DC power supply.
The LM4910 utilizes a new circuit topology that eliminates
output coupling capacitors and half-supply bypass capaci-
tors (patent pending). The LM4910 contains advanced pop &
click circuitry which eliminates noises caused by transients
that would otherwise occur during turn-on and turn-off.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4910 does not require
any output coupling capacitors, half-supply bypass capaci-
tors, or bootstrap capacitors, it is ideally suited for low-power
portable applications where minimal space and power con-
sumption are primary requirements.
The LM4910 features a low-power consumption shutdown
mode, activated by driving the shutdown pin with logic low.
Additionally, the LM4910 features an internal thermal shut-
down protection mechanism. The LM4910 is also unity-gain
stable and can be configured by external gain-setting resis-
tors.
Key Specifications
n
PSRR at f = 217Hz
65dB (typ)
n
Power Output at V
DD = 3.3V, RL =32
, and THD ≤
1%
35mW (typ)
n
Shutdown Current
0.1A (typ)
Features
n
Eliminates headphone amplifier output coupling
capacitors (patent pending)
n
Eliminates half-supply bypass capacitor (patent pending)
n
Advanced pop & click circuitry eliminates noises during
turn-on and turn-off
n
Ultra-low current shutdown mode
n
Unity-gain stable
n
2.2V - 5.5V operation
n
Available in space-saving MSOP, LLP, and SOIC
packages
Applications
n
Mobile Phones
n
PDAs
n
Portable eletronics devices
n
Portable MP3 players
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20030565
FIGURE 1. Typical Audio Amplifier Application Circuit
February 2003
LM4910
Output
Capacitor-less
Stereo
35mW
Headphone
Amplifier
2003 National Semiconductor Corporation
DS200305
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4911LD/NOPB | 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| LM4913MH/NOPB | 0.09 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4914MH/NOPB | 0.085 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4915LQ/NOPB | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC8 |
| LM4918LQ/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4911 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output |
| LM4911LD | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output |
| LM4911LD/NOPB | 功能描述:IC AMP AUDIO PWR .145W AB 10LLP 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) |
| LM4911LDX | 功能描述:IC AMP AUDIO PWR .145W AB 10LLP 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) |
| LM4911MM | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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