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參數(shù)資料
| 型號(hào)： | LM4731 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Stereo 25W Audio Power Amplifier with Mute and Standby Modes |
| 中文描述： | 立體聲25瓦音頻功率放大器靜音和待機(jī)模式 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 640K |
| 代理商： | LM4731 |
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LM4731
Stereo 25W Audio Power Amplifier with Mute and
Standby Modes
General Description
The LM4731 is a stereo audio amplifier capable of delivering
typically 25W per channel of continuous average output
power into a 4
or 8
load with less than 10% THD+N from
20Hz - 20kHz.
Each amplifier has an independent smooth transition fade-
in/out mute and a power conserving standby mode which
can be controlled by external logic.
The LM4731 has short circuit protection and a thermal shut
down feature that is activated when the die temperature
exceeds 150C. The LM4731 also has a under voltage lock
out feature for click and pop free power off and on.
The LM4731 has a wide operating supply range from +/-10V
- +/-28V allowing for lower cost unregulated power supplies
to be used.
Key Specifications
j
Output Power into 4
or 8
, 10% THD+N
j
THD+N at 1kHz with 2 x 1W into 8
j
Mute Attenuation
j
PSRR with f
RIPPLE
= 120Hz,
V
RIPPLE
= 1V
RMS
j
Slew Rate
j
Standby Current (+/-22V)
25W (typ)
0.02% (typ)
85dB (typ)
50dB (typ)
18V/μs (typ)
4.8mA (typ)
Features
n
Minimal amount of external components necessary
n
Quiet fade-in/out mute mode
n
Low current Standby-mode
Applications
n
Audio amplifier for high-end stereo TVs
n
Audio amplifier for component stereo
n
Audio amplifier for compact stereo
n
Audio amplifier for PC satellite speaker systems
n
Audio amplifier for self powered speakers
Connection Diagrams
Plastic Package
TO-220 Top Marking (Note 12)
20060352
Top View
Non-Isolated Package
Order Number LM4731TA
See NS Package Number TA15A
20060375
Top View
U - Wafer Fab Code
Z - Assembly Plant Code
XY - Date Code
TT - Die Traceability
LM4731TA - LM4731TA
July 2003
L
2003 National Semiconductor Corporation
DS200603
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4731TA | Stereo 25W Audio Power Amplifier with Mute and Standby Modes |
| LM4732 | Stereo 50W Audio Power Amplifier with Mute |
| LM4732TA | Stereo 50W Audio Power Amplifier with Mute |
| LM4780 | Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier with Mute |
| LM4780TA | Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier with Mute |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4731TA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 25W Audio Power Amplifier with Mute and Standby Modes |
| LM4731TA/NOPB | 功能描述:IC AMP AUDIO PWR 25W AB TO220-15 RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4731TA/NOPB | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| LM4732 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 50W Audio Power Amplifier with Mute |
| LM4732TA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 50W Audio Power Amplifier with Mute |
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