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参数资料
| 型号： | LM4841MHX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| 封装： | TSSOP-28 |
| 文件页数： | 1/31页 |
| 文件大小： | 1138K |
| 代理商： | LM4841MHX/NOPB |
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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
相关PDF资料 |
PDF描述 |
|---|---|
| LM4841MT/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4841MTX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4841LQ/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28 |
| LM4842MHX/NOPB | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| LM4842MTX/NOPB | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4841MT | 制造商:NSC 制造商全称: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 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) |
| LM4842 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control Transient Free Outputs, and Cap-less Headphone Drive |
| LM4842LQ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control Transient Free Outputs, and Cap-less Headphone Drive |
| LM4842LQ/NOPB | 功能描述:IC AMP AUDIO PWR 2.2W STER 28LLP 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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