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参数资料
| 型号： | LM4731TA/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| 封装： | PLASTIC, TO-220, 15 PIN |
| 文件页数： | 1/16页 |
| 文件大小： | 640K |
| 代理商： | LM4731TA/NOPB |
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 25W (typ)
j THD+N at 1kHz with2x1W into 8
0.02% (typ)
j Mute Attenuation
85dB (typ)
j PSRR with fRIPPLE = 120Hz,
V
RIPPLE =1VRMS
50dB (typ)
j Slew Rate
18V/s (typ)
j Standby Current (+/-22V)
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
LM4731
Stereo
25W
Audio
Power
Amplifier
with
Mute
and
Standby
Modes
2003 National Semiconductor Corporation
DS200603
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4732 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 50W Audio Power Amplifier with Mute |
| LM4732TA | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 50W Audio Power Amplifier with Mute |
| LM4733 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:3 Channel 30W Audio Power Amplifier with Mute |
| LM4733BG240G320WCF | 制造商:DENSITRON 功能描述:LCD MODULE GRAPHIC |
| LM4733TA | 制造商:NSC 制造商全称:National Semiconductor 功能描述:3 Channel 30W Audio Power Amplifier with Mute |
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