LM2876T

更新时间： 2024-11-22 22:51:55

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
19页	568K
描述
Overture⑩ Audio Power Amplifier Series High-Performance 40W Audio Power Amplifier w/Mute

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LM2876T 数据手册

August 1995

Ovture

LM2876

™

Overture Audio Power Amplifier Series

High-Performance 40W Audio Power Amplifier w/Mute

General Description

The LM2876 is a high-performance audio power amplifier

capable of delivering 40W of continuous average power to

an 8Ω load with 0.1% (THD + N) from 20 Hz–20 kHz.

Features

n 40W continuous average output power into 8Ω

n 75W instantaneous peak output power capability

n Signal-to-Noise Ratio ≥ 95 dB(min)

The performance of the LM2876, utilizing its Self Peak In-

n An input mute function

™

stantaneous Temperature (˚Ke) (SPiKe ) Protection Cir-

n Output protection from a short to ground or to the

supplies via internal current limiting circuitry

n Output over-voltage protection against transients from

inductive loads

n Supply under-voltage protection, not allowing internal

biasing to occur when |V_EE| + |V_CC| ≤ 12V, thus

eliminating turn-on and turn-off transients

n 11-lead TO-220 package

cuitry, puts it in a class above discrete and hybrid amplifiers

by providing an inherently, dynamically protected Safe Oper-

ating Area (SOA). SPiKe Protection means that these parts

are completely safeguarded at the output against overvolt-

age, undervoltage, overloads, including shorts to the sup-

plies, thermal runaway, and instantaneous temperature

peaks.

The LM2876 maintains an excellent Signal-to-Noise Ratio of

greater than 95 dB(min) with a typical low noise floor of

2.0 µV. It exhibits extremely low (THD + N) values of 0.06%

at the rated output into the rated load over the audio spec-

trum, and provides excellent linearity with an IMD (SMPTE)

typical rating of 0.004%.

Applications

n Component stereo

n Compact stereo

n Self-powered speakers

n Surround-sound amplifiers

n High-end stereo TVs

Typical Application

DS011775-1

* Optional components dependent upon specific design requirements. Refer to the External Components Description section for a component functional

description.

FIGURE 1. Typical Audio Amplifier Application Circuit

™

Overture and SPiKe Protection are trademarks of National Semiconductor Corporation.

DS011775

www.national.com

12 3 4 5 6 7...19

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