參數(shù)資料
型號(hào)： LM4912MM/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10
封裝： MSOP-10
文件頁(yè)數(shù)： 1/16頁(yè)
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
相關(guān)PDF資料
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4912MMX/NOPB 功能描述:IC AMP AUDIO PWR .145W AB 10MSOP 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)
LM4913 制造商:NSC 制造商全稱(chēng):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 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)
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