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參數(shù)資料
| 型號(hào)： | LM4910MA/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | 0.035 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 573K |
| 代理商： | LM4910MA/NOPB |
January 2007
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
to a 32
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 capacitors.
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 capacitors, or
bootstrap capacitors, it is ideally suited for low-power portable
applications where minimal space and power consumption
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
■ PSRR at f = 217Hz
65dB (typ)
■ Power Output at V
DD = 3.3V, RL = 32, and
THD
≤ 1%
35mW
(typ)
■ Shutdown Current
0.1A (typ)
Features
■ Eliminates headphone amplifier output coupling
capacitors
■ Eliminates half-supply bypass capacitor
■ Advanced pop & click circuitry eliminates noises during
turn-on and turn-off
■ Ultra-low current shutdown mode
■ Unity-gain stable
■ 2.2V - 5.5V operation
■ Available in space-saving MSOP, LLP, and SOIC
packages
Applications
■ Mobile Phones
■ PDAs
■ Portable electronics devices
■ Portable MP3 players
Typical Application
20030565
FIGURE 1. Typical Audio Amplifier Application Circuit
Boomer is a registered trademark of National Semiconductor Corporation.
2007 National Semiconductor Corporation
200305
www.national.com
LM4910
Output
Capacitor-less
Stereo
35mW
Headphone
Amplifier
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4910MMX/NOPB | 0.035 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4910MAX/NOPB | 功能描述:IC AMP AUDIO PWR .035W AB 8SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類(lèi)型:H 類(lèi) 輸出類(lèi)型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)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(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類(lèi)型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4910MM | 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 |
| LM4910MM/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 |
| LM4910MMX/NOPB | 功能描述:IC AMP AUDIO PWR .035W AB 8MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類(lèi)型:H 類(lèi) 輸出類(lèi)型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)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(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類(lèi)型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4911 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output |
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