Datasheet > LM4899LD

LM4899LD

更新时间： 2024-09-26 22:36:31

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美国国家半导体 - NSC		商用集成电路放大器功率放大器光电二极管
页数	文件大小	规格书
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描述
1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB Gain

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LM4899LD 数据手册

July 2003

LM4899

1 Watt Fully Differential Audio Power Amplifier With

Shutdown Select and Fixed 6dB Gain

General Description

Key Specifications

The LM4899 is a fully differential audio power amplifier

primarily designed for demanding applications in mobile

phones and other portable communication device applica-

tions. It is capable of delivering 1 watt of continuous average

power to an 8Ω load with less than 1% distortion (THD+N)

from a 5V_DCpower supply.

Improved PSRR at 217Hz

Power Output at 5.0V & 1% THD

Power Output at 3.3V & 1% THD

Shutdown Current

83dB

1.0W(typ.)

400mW(typ.)

0.1µA(typ.)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4899 does not require output

coupling capacitors or bootstrap capacitors, and therefore is

ideally suited for mobile phone and other low voltage appli-

cations where minimal power consumption is a primary re-

quirement.

Features

n Fully differential amplification

n Internal-gain-setting resistors

n Available in space-saving packages micro SMD, MSOP

and LLP

n Ultra low current shutdown mode

n Can drive capacitive loads up to 500pF

n Improved pop & click circuitry which virtually eliminates

noises during turn-on and turn-off transitions

n 2.4 - 5.5V operation

n No output coupling capacitors, snubber networks or

bootstrap capacitors required

n Shutdown high or low selectivity

The LM4899 features a low-power consumption shutdown

mode. To facilitate this, Shutdown may be enabled by either

logic high or low depending on mode selection. Driving the

shutdown mode pin either high or low enables the shutdown

select pin to be driven in a likewise manner to enable Shut-

down. Additionally, the LM4899 features an internal thermal

shutdown protection mechanism.

The LM4899 contains advanced pop & click circuitry which

virtually eliminates noises which would otherwise occur dur-

ing turn-on and turn-off transitions.

Applications

n Mobile phones

The LM4899 has an internally fixed gain of 6dB.

n PDAs

n Portable electronic devices

Connection Diagrams

9 Bump micro SMD Package

9 Bump micro SMD Marking

200645C7

X - Date Code

T - Die Run Traceability

G - Boomer Family

C1 - LM4899ITL

200645A0

Top View

Order Number LM4899ITL, LM4899ITLX

See NS Package Number TLA09AAA

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

DS200645

www.national.com

12 3 4 5 6 7...16

中文翻译

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与LM4899LD相关器件

型号	品牌	获取价格	描述	数据表
LM4899LDX	TI	获取价格	IC,AUDIO AMPLIFIER,SINGLE,LLCC,10PIN,PLASTIC
LM4899LDX/NOPB	TI	获取价格	IC,AUDIO AMPLIFIER,SINGLE,LLCC,10PIN,PLASTIC
LM4899MM	NSC	获取价格	1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB Gain
LM4899MM/NOPB	TI	获取价格	1W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10, MSOP-10
LM4899MMX/NOPB	TI	获取价格	IC,AUDIO AMPLIFIER,SINGLE,TSSOP,10PIN,PLASTIC
LM4900	NSC	获取价格	265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
LM4900LD	NSC	获取价格	265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
LM4900LDX	NSC	获取价格	IC 0.675 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, LLP-8, Audio/Video Amplifier
LM4900LDX/NOPB	TI	获取价格	0.675W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, LLP-8
LM4900M	NSC	获取价格	265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

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