Datasheet > LM4820MM-6

LM4820MM-6

更新时间： 2024-02-14 23:16:53

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
18页	542K
描述
Fixed Gain 1 Watt Audio Power Amplifier

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LM4820MM-6 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	TSSOP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.75
商用集成电路类型：	AUDIO AMPLIFIER	谐波失真：	2%
JESD-30 代码：	S-PDSO-G8	长度：	3 mm
信道数量：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出功率：	1 W
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	SQUARE	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
座面最大高度：	1.09 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	3 mm	Base Number Matches：	1

LM4820MM-6 数据手册

April 2002

LM4820-6

Fixed Gain 1 Watt Audio Power Amplifier

General Description

Key Specifications

The LM4820-6 is an audio power amplifier primarily de-

signed for demanding applications in mobile phones and

other portable communication device applications. It is ca-

pable of delivering 1 watt of continuous average power to an

8Ω BTL load with less than 1% distortion (THD+N) at 6dB of

BTL gain 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

62dB

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 LM4820-6 does not require input

and gain resistors, output coupling capacitors or bootstrap

capacitors, and therefore is ideally suited for mobile phone

and other low voltage applications where minimal parts

count and low power consumption is a primary requirement.

Features

n Fixed 6dB BTL voltage gain

n Available in space-saving packages micro SMD, MSOP

and SOIC

n Ultra low current shutdown mode

n Can drive capacitive loads up to 500 pF

n Improved pop & click circuitry eliminates noises during

turn-on and turn-off transitions

n 2.0 - 5.5V operation

n No output coupling capacitors, snubber networks or

bootstrap capacitors required

The LM4820-6 features a low-power consumption shutdown

mode, which is achieved by driving the shutdown pin with

logic low. Additionally, the LM4820-6 features an internal

thermal shutdown protection mechanism.

The LM4820-6 contains advanced pop & click circuitry which

eliminates noises which would otherwise occur during

turn-on and turn-off transitions.

n External gain configuration still possible

Applications

n Mobile Phones

n PDAs

n Portable electronic devices

Typical Application

DS200106-1

FIGURE 1. Typical Audio Amplifier Application Circuit

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

DS200106

www.national.com

12 3 4 5 6 7...18

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