LM4906LD

更新时间： 2024-02-18 21:54:36

品牌	Logo	应用领域
美国国家半导体 - NSC		商用集成电路音频放大器
页数	文件大小	规格书
15页	466K
描述
1W, Bypass-Capacitor-less Audio Amplifier with Internal Selectable Gain

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技术参数
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LM4906LD 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	TSSOP, TSSOP8,.19	Reach Compliance Code：	compliant
风险等级：	5.84	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e3
湿度敏感等级：	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	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP8,.19
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	3/5 V	认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers	最大压摆率：	8 mA
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

LM4906LD 数据手册

May 2003

LM4906

1W, Bypass-Capacitor-less Audio Amplifier with Internal

Selectable Gain

General Description

Key Specifications

The LM4906 is an audio power amplifier primarily designed

for demanding applications in mobile phones and other por-

table communication device applications. It is capable of

delivering 1W of continuous average power to an 8Ω BTL

load with less than 1% distortion (THD+N) from a +5V power

supply.

Improved PSRR at 217Hz for +3V

71dB

Power Output at +5V, THD+N = 1%, 8Ω

1.0W (typ)

Power Output at +3V, THD+N = 1%, 8Ω 390mW (typ)

Total shutdown power supply current 0.1µA (typ)

The LM4906 is the first National Semiconductor Boomer

Power Amplifier that does not require an external PSRR

bypass capacitor. The LM4906 also has an internal select-

able gain of either 6dB or 12dB. In addition, no output

coupling capacitors or bootstrap capacitors are required

which makes the LM4906 ideally suited for cell phone and

other low voltage portable applications.

Features

n Selectable gain of 6dB (2V/V) or 12dB (4V/V)

n No output or PSRR bypass capacitors required

n Improved “Click and Pop” suppression circuitry

n Very fast turn on time: 5ms (typ)

n Minimum external components

n 2.6 - 5.5V operation

The LM4906 contains advanced pop and click circuitry that

eliminates noise, which would otherwise occur during

turn-on and turn-off transitions.

n BTL output can drive capacitive loads

n Ultra low current shutdown mode (SD Low)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4906 features a low -power

consumption shutdown mode (the part is enabled by pulling

the SD pin high). Additionally, the LM4906 features an inter-

nal thermal shutdown protection mechanism.

Applications

n Portable computers

n Desktop computers

n Multimedia monitors

Typical Application

200571B9

FIGURE 1. Typical Audio Amplifier Application Circuit

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

DS200571

www.national.com

12 3 4 5 6 7...15

中文翻译

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与LM4906LD相关器件

型号	品牌	获取价格	描述	数据表
LM4906LDX/NOPB	NSC	获取价格	IC,AUDIO AMPLIFIER,SINGLE,LLCC,10PIN,PLASTIC
LM4906MM	NSC	获取价格	1W, Bypass-Capacitor-less Audio Amplifier with Internal Selectable Gain
LM4906MM/NOPB	NSC	获取价格	IC 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, MSOP-8, Audio/Video Amplifier
LM4906MM/NOPB	TI	获取价格	具有可选增益的 1W 单声道、模拟输入 AB 类音频放大器 \| DGK \| 8 \| -40
LM4906MMX/NOPB	NSC	获取价格	IC,AUDIO AMPLIFIER,SINGLE,TSSOP,8PIN,PLASTIC
LM4907	NSC	获取价格	1 Watt Audio Power Amplifier
LM4907LQ	NSC	获取价格	1 Watt Audio Power Amplifier
LM4907LQ/NOPB	TI	获取价格	AUDIO AMPLIFIER
LM4907LQX	NSC	获取价格	IC 1.07 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC8, LLP-8, Audio/Video Amplifier
LM4907MM	NSC	获取价格	1 Watt Audio Power Amplifier

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