LM4839

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		复用器放大器功率放大器
页数	文件大小	规格书
34页	1106K
描述
Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux

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LM4839 数据手册

April 2002

LM4839

Stereo 2W Audio Power Amplifiers

with DC Volume Control, Bass Boost, and Input Mux

General Description

Key Specifications

n P_Oat 1% THD+N

The LM4839 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+N, or 2.2W into 3Ω (Note 2) with less than 1.0%

THD+N.

into 3Ω (LQ & MTE)

into 4Ω (LQ & MTE)

into 8Ω (LM4839) (MT, MTE, & LQ)

2.2W(typ)

2.0W(typ)

1.1W(typ)

n Single-ended mode - THD+N at 85mW into

Boomer^®audio integrated circuits were designed specifically

to provide high quality audio while requiring a minimum

amount of external components. The LM4839 incorporates a

DC volume control, stereo bridged audio power amplifiers,

selectable gain or bass boost, and an input mux making it

optimally suited for multimedia monitors, portable radios,

desktop, and portable computer applications.

32Ω

1.0%(typ)

0.2µA(typ)

n Shutdown current

Features

n DC Volume Control Interface

n Input mux

n System Beep Detect

The LM4839 features an externally controlled, low-power

consumption shutdown mode, and both a power amplifier

and headphone mute for maximum system flexibility and

performance.

n Stereo switchable bridged/single-ended power amplifiers

n Selectable internal/external gain and bass boost

n “Click and pop” suppression circuitry

Note 1: When properly mounted to the circuit board, the LM4839LQ and

LM4839MTE will deliver 2W into 4Ω. The LM4839MT will deliver 1.1W into

8Ω. See the Application Information section for LM4839LQ and LM4839MTE

usage information.

n Thermal shutdown protection circuitry

Applications

n Portable and Desktop Computers

n Multimedia Monitors

Note 2: An LM4839LQ and LM4839MTE that have been properly mounted

to the circuit board and forced-air cooled will deliver 2.2W into 3Ω.

n Portable Radios, PDAs, and Portable TVs

Connection Diagrams

LLP Package

DS200134-83

Top View

Order Number LM4839LQ

See NS Package Number LQA028AA for Exposed-DAP LLP

Boomer^®is a registered trademark of NationalSemiconductor Corporation.

DS200134

www.national.com

12 3 4 5 6 7...34

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与LM4839相关器件

型号	品牌	获取价格	描述	数据表
LM4839LQ	NSC	获取价格	Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839LQ	ROCHESTER	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, CQCC28, LLP-28
LM4839LQ/NOPB	TI	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, CQCC28, LLP-28
LM4839LQX/NOPB	NSC	获取价格	IC 2 CHANNEL(S), TONE CONTROL CIRCUIT, CQCC28, LLP-28, Audio Control IC
LM4839MT	NSC	获取价格	Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839MT	ROCHESTER	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28, TSSOP-28
LM4839MT/NOPB	ROCHESTER	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28, TSSOP-28
LM4839MT/NOPB	TI	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28, TSSOP-28
LM4839MTE	NSC	获取价格	Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839MTE/NOPB	TI	获取价格	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28, TSSOP-28

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