LM4908LQ

更新时间： 2024-10-01 23:16:47

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
21页	931K
描述
10kV ESD Rated, Dual 120 mW Headphone Amplifier

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LM4908LQ 数据手册

February 2004

LM4908

10kV ESD Rated, Dual 120 mW Headphone Amplifier

General Description

Output power at 0.1% THD+N

at 1kHz into 32Ω

75mW (typ)

The LM4908 is a dual audio power amplifier capable of

delivering 120mW per channel of continuous average power

into a 16Ω load with 0.1% (THD+N) from a 5V power supply.

Features

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components using surface mount packaging. Since

the LM4908 does not require bootstrap capacitors or snub-

ber networks, it is optimally suited for low-power portable

systems.

n Up to 10kV ESD protection on all pins

n MSOP, SOP, and LLP surface mount packaging

n Switch on/off click suppression

n Excellent power supply ripple rejection

n Unity-gain stable

The unity-gain stable LM4908 can be configured by external

gain-setting resistors.

n Minimum external components

Applications

Key Specifications

n Headphone Amplifier

n Personal Computers

n Portable electronic devices

THD+N at 1kHz at 120mW

continuous average output power

into 16Ω

0.1% (typ)

THD+N at 1kHz at 75mW

continuous average output power

into 32Ω

Typical Application

20075201

*Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors.

FIGURE 1. Typical Audio Amplifier Application Circuit

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

DS200752

www.national.com

12 3 4 5 6 7...21

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