LM4880N

更新时间： 2024-09-29 22:51:39

品牌	Logo	应用领域
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
12页	378K
描述
Dual 250 mW Audio Power Amplifier with Shutdown Mode

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LM4880N 数据手册

November 1995

LM4880

Dual 250 mW Audio Power Amplifier with Shutdown

Mode

n THD at 1 kHz at 85 mW continuous average output

power into 32Ω: 0.1% (typ)

n Output power at 10% THD + N at 1 kHz into 8Ω:

325 mW (typ)

General Description

The LM4880 is a dual audio power amplifier capable of deliv-

ering typically 250 mW per channel of continuous average

power to an 8Ω load with 0.1% (THD) using a 5V power sup-

ply.

n Shutdown Current: 0.7 µA (typ)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

Features

n No bootstrap capacitors or snubber circuits are

necessary

n Small Outline (SO) and DIP packaging

n Unity-gain stable

external components using surface mount packaging.

Since the LM4880 does not require bootstrap capacitors or

snubber networks, it is optimally suited for low-power por-

table systems.

n External gain configuration capability

The LM4880 features an externally controlled, low-power

consumption shutdown mode, as well as an internal thermal

shutdown protection mechanism.

Applications

n Headphone Amplifier

n Personal Computers

n CD-ROM Players

The unity-gain stable LM4880 can be configured by external

gain-setting resistors.

Key Specifications

n THD at 1 kHz at 200 mW continuous average output

power into 8Ω: 0.1% (max)

Typical Application

DS012343-1

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.

DS012343

www.national.com

12 3 4 5 6 7...12

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