LM4863MT

更新时间： 2024-11-19 22:51:39

品牌	Logo	应用领域
美国国家半导体 - NSC		音频放大器
页数	文件大小	规格书
16页	515K
描述
Dual 2.2W Audio Amplifier Plus Stereo Headphone Function

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LM4863MT 数据手册

October 1999

LM4863

Dual 2.2W Audio Amplifier Plus Stereo Headphone

Function

General Description

Key Specifications

The LM4863 is a dual bridge-connected audio power ampli-

fier which, when connected to a 5V supply, will deliver 2.2W

to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2)with less

than 1.0% THD+N. In addition, the headphone input pin al-

lows the amplifiers to operate in single-ended mode to drive

stereo headphones.

n P_Oat 1% THD+N

into 3Ω (LM4863MTE)

into 4Ω (LM4863MTE)

into 8Ω (LM4863)

2.5W(typ)

2.2W(typ)

1.1W(typ)

0.5%(max)

n Single-ended mode - THD+N

at 75mW into 32Ω

Boomer audio power amplifiers were designed specifically to

provide high quality output power from a surface mount

package while requiring few external components. To sim-

plify audio system design, the LM4863 combines dual bridge

n Shutdown current

0.7µA(typ)

speaker amplifiers and stereo headphone amplifiers on one Features

chip.

n Stereo headphone amplifier mode

n “Click and pop” suppression circuitry

n Unity-gain stable

n Thermal shutdown protection circuitry

n Exposed-DAP TSSOP, TSSOP, SOIC and DIP

The LM4863 features an externally controlled, low-power

consumption shutdown mode, a stereo headphone amplifier

mode, and thermal shutdown protection. It also utilizes cir-

cuitry to reduce “clicks and pops” during device turn-on.

Note 1: An LM4863MTE which has been properly mounted to the circuit

board will deliver 2.2W into 4Ω. The other package options for the LM4863

will deliver 1.1W into 8Ω. See the Application Information section for

LM4863MTE usage information.

packaging available

Applications

n Multimedia monitors

Note 2: An LM4863MTE which has been properly mounted to the circuit

board and forced-air cooled will deliver 2.5W into 3Ω.

n Portable and desktop computers

n Portable televisions

Typical Application

DS012881-1

Refer to the section Proper Selection of External Components, for a detailed discussion of C size.

FIGURE 1. Typical Audio Amplifier Application Circuit

Boomer^®is a registered trademark of National Semiconductor Corporation.

DS012881

www.national.com

12 3 4 5 6 7...16

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与LM4863MT相关器件

型号	品牌	获取价格	描述	数据表
LM4863MT/NOPB	TI	获取价格	1.5W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, 4.40 MM, TSSOP-20
LM4863MTE	NSC	获取价格	Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
LM4863MTE/NOPB	TI	获取价格	3.2W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, 6.50 X 4.40 MM, 0.90 MM HEIGHT, TSSOP-20
LM4863MTEX/NOPB	TI	获取价格	3.2W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, EIAJ TYPE1, TSSOP-20
LM4863MTX	TI	获取价格	暂无描述
LM4863MX	NSC	获取价格	Engineering Project Manager
LM4863MX/NOPB	TI	获取价格	1.5W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO16, 0.300 INCH, PLASTIC, SOIC-16
LM4863N	NSC	获取价格	Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
LM4863-N20-R	UTC	获取价格	DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION
LM4863-N20-T	UTC	获取价格	DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION

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