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參數(shù)資料
| 型號(hào)： | LM4870 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 1.1W Audio Power Amplifier with Shutdown Mode |
| 中文描述： | 1.1W音頻功率放大器關(guān)斷模式 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 259K |
| 代理商： | LM4870 |
LM4870
1.1W Audio Power Amplifier with Shutdown Mode
General Description
The LM4870 is a bridge-connected audio power amplifier ca-
pable of delivering 1.1W of continuous average power to an
8
load with less than 0.5% THD+N over the audio spectrum
from a 5V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal number of
external components. Since the LM4870 does not require
output coupling capacitors, bootstrap capacitors or snubber
networks, it is optimally suited for low-power portable sys-
tems.
The LM4870 features an externally controlled, low-power
consumption shutdown mode, as well as an internal thermal
shutdown protection mechanism. It also includes two head-
phone control inputs and a headphone sense output for ex-
ternal monitoring. The LM4870 is unity-gain stable and the
gain is set using external resistors.
Key Specifications
n
THD+N at 1W into 8
n
Output power into 8
at 1kHz
at 10%THD+N
n
Shutdown Current
0.5% (max)
1.5W (typ)
0.6μA (typ)
Features
n
No output coupling capacitors, bootstrap capacitors, or
snubber circuits are necessary
n
Small Outline (SOIC) power packaging
n
Unity-gain stable
n
External gain configuration capability
Applications
n
Personal computers
n
Desktop computers
n
Low voltage audio system
Typical Application
Connection Diagram
Boomer
is a registered trademark of National Semiconductor Corporation.
DS100094-1
FIGURE 1. Typical Audio Amplifier Application Circuit
Small Outline Package
DS100094-2
Top View
Order Number LM4870M
See NS Package Number M16A
October 1997
L
1999 National Semiconductor Corporation
DS100094
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4870M | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871 | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871N | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871MX | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871M | 1.1W Audio Power Amplifier with Shutdown Mode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4870M | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4870MX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4871 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3W Audio Power Amplifier with Shutdown Mode |
| LM4871_03 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3W Audio Power Amplifier with Shutdown Mode |
| LM4871LD | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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