Datasheet > LM4843MH

LM4843MH

更新时间： 2024-11-06 22:51:51

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器功率放大器
页数	文件大小	规格书
19页	594K
描述
Stereo 2W Audio Power Amplifiers with DC Volume Control

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中文翻译

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LM4843MH 数据手册

July 2002

LM4843

Stereo 2W Audio Power Amplifiers

with DC Volume Control

General Description

Key Specifications

n P_Oat 1% THD+N

The LM4843 is a monolithic integrated circuit that provides

DC volume control, and stereo bridged audio power amplifi-

ers capable of producing 2W into 4Ω (Note 1) with less than

1.0% THD or 2.2W into 3Ω (Note 2) with less than 1.0%

THD.

into 3Ω

into 4Ω

into 8Ω

2.2W (typ)

2.0W (typ)

1.1W (typ)

0.7µA (typ)

n Shutdown current

Boomer^®audio integrated circuits were designed specifically

to provide high quality audio while requiring a minimum

amount of external components. The LM4843 incorporates a

DC volume control with stereo bridged audio power amplifi-

ers making it optimally suited for multimedia monitors, por-

table radios, desktop, and portable computer applications.

Features

n Acoustically Enhanced DC Volume Control Taper

n Stereo bridged power amplifiers

n “Click and pop” suppression circuitry

n Thermal shutdown protection circuitry

The LM4843 features an externally controlled, low-power

consumption shutdown mode, and both a power amplifier

and headphone mute for maximum system flexibility and

performance.

Note 1: When properly mounted to the circuit board, the LM4843MH will

deliver 2W into 4Ω. See the Application Information section for LM4843MH

usage information.

Applications

n Portable and Desktop Computers

n Multimedia Monitors

n Portable Radios, PDAs, and Portable TVs

Note 2: LM4843MH that has been properly mounted to the circuit board and

forced-air cooled will deliver 2.2W into 3Ω.

Block Diagram

20038389

FIGURE 1. LM4843 Block Diagram

Boomer^®is a registered trademark of NationalSemiconductor Corporation.

DS200383

www.national.com

12 3 4 5 6 7...19

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与LM4843MH相关器件

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LM4843MHX	TI	获取价格	IC 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20, TSSOP-20, Audio Control IC
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LM4844_07	NSC	获取价格	Stereo 1.2W Audio Sub-System with 3D Enhancement
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LM4844TLX	NSC	获取价格	暂无描述
LM4844TLX/NOPB	TI	获取价格	VOLUME CONTROL CIRCUIT
LM4845	NSC	获取价格	Output Capacitor-less Audio Subsystem with Programmable National 3D
LM4845ITL	NSC	获取价格	Output Capacitor-less Audio Subsystem with Programmable National 3D
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