參數(shù)資料
型號(hào): LM4841LQ/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28
封裝: LLP-28
文件頁數(shù): 1/31頁
文件大?。?/td> 1138K
代理商: LM4841LQ/NOPB
LM4841
Stereo 2W Amplifiers with DC Volume Control,
Transient Free Outputs, and Cap-less Headphone Drive
General Description
The LM4841 is a monolithic integrated circuit that provides
DC volume control and stereo bridged audio power amplifi-
ers capable of producing 2W into 4
(Note 1) or 2.2W into
3
(Note 2) with less than 1.0% THD.
The LM4841 uses advanced, latest generation circuitry to
eliminate all traces of clicks and pops when the supply
voltages is first applied. The amplifier has a headphone-
amplifier-select input pin that is used to switch the amplifiers
from bridge to single-ended mode for driving headphones. A
new circuit topology eliminates headphone output coupling
capacitors (patent pending).
Boomer audio integrated circuits are designed specifically
to provide high quality audio while requiring a minimum
amount of external components. The LM4841 incorporates a
DC volume control, stereo bridged audio power amplifiers
and a selectable gain or bass boost, making it optimally
suited for multimedia monitors, portable radios, desktop, and
portable computer applications.
The LM4841 features an externally controlled, low-power
consumption shutdown mode (Shutdown Low), and both a
power amplifier and headphone mute for maximum system
flexibility and performance.
Note 1: When properly mounted to the circuit board, LM4841MH and
LM4841LQ will deliver 2W into 4
. The LM4841MT will deliver 1.1W into 8.
See the Application Information section for LM4841MH usage information.
Note 2: An LM4841MH that has been properly mounted to the circuit board
and forced-air cooled will deliver 2.2W into 3
.
Key Specifications
n
P
O at 1% THD+N
n
into 3
(MH and LQ)
2.2W (typ)
n
into 4
( MH and LQ)
2.0W (typ)
n
into 8
(MT, MH, and LQ)
1.1W (typ)
n
Single-ended THD+N at 85mW into 32
1.0%(typ)
n
Shutdown current
0.7A (typ)
Features
n
Stereo headphone amplifier mode that eliminates the
Output Coupling Capacitors (patent pending)
n
Acoustically Enhanced DC Volume Control Taper
n
System Beep Detect
n
Stereo switchable bridged/single-ended power amplifiers
n
Selectable internal/external gain and bass boost
n
Advanced “click and pop” suppression circuitry
n
Thermal shutdown protection circuitry
Applications
n
Portable and Desktop Computers
n
Multimedia Monitors
n
Portable Radios, PDAs, and Portable TVs
Connection Diagrams
TSSOP Package
20028002
Top View
Order Number LM4841MT or LM4841MH
See NS Package Number MTC28 for TSSOP and MXA28A for Exposed-DAP TSSOP
Boomer is a registered trademark of National Semiconductor Corporation.
August 2002
LM4841
Stereo
2W
Amplifiers
with
DC
V
olume
Control,T
ransient
Free
Outputs,
and
Cap-less
Headphone
Drive
2002 National Semiconductor Corporation
DS200280
www.national.com
相關(guān)PDF資料
PDF描述
LM4842MHX/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
LM4842MTX/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
LM4843MH/NOPB 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20
LM4843MHX/NOPB 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20
LM4850MM/NOPB 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4841MH 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control, Transient Free Outputs, and Cap-less Headphone Drive
LM4841MH/NOPB 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類別: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® 類型:H 類 輸出類型: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)
LM4841MT 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control, Transient Free Outputs, and Cap-less Headphone Drive
LM4841MT/NOPB 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類別: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® 類型:H 類 輸出類型: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)
LM4842 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control Transient Free Outputs, and Cap-less Headphone Drive