LM4730TA Datasheet

IC型號：
LM4730TA
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National Semiconductor [Stereo 14W Audio Power Amplifier wi...
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LM4730 Stereo 14W Audio Power Amplifier with Mute and Standby Modes

July 2003

LM4730

Stereo 14W Audio Power Amplifier with Mute and

Standby Modes

General Description

The LM4730 is a stereo audio amplifier capable of delivering

typically 14W per channel of continuous average output

power into a 4鈩?or 8鈩?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 LM4730 has short circuit protection and a thermal shut

down feature that is activated when the die temperature

exceeds 150藲C. The LM4730 also has a under voltage lock

out feature for click and pop free power off and on.

The LM4730 has a wide operating supply range from +/-10V

- +/-25V allowing for lower cost unregulated power supplies

to be used.

Key Specifications

Output power into 4鈩?or 8鈩? 10% THD+N

14W (typ)

THD+N at 1kHz with 2 X 1W into 8鈩?/div>

0.02% (typ)

Mute Attenuation

85dB (typ)

PSRR with f

RIPPLE

= 120Hz, V

RIPPLE

= 1V

RMS

50dB (typ)

Slew Rate

18V/碌s (typ)

Standby Current (+/-17V)

3.5mA (typ)

Features

Minimal amount of external components necessary

Quiet fade-in/out mute mode

Low current Standby-mode

Applications

Audio

amplifier

for

high-end stereo TVs

component stereo

compact stereo

PC satellite speaker systems

self powered speakers

Connection Diagrams

Plastic Package

(Note 12)

TO-220 Top Marking (Note 12)

20059474

20059452

Top View

Non-Isolated Package

Order Number LM4730TA

See NS Package Number TA15A

Top View

U - Wafer Fab Code

Z - Assembly Plant Code

XY - Date Code

TT - Die Traceability

LM4730TA - LM4730TA

漏 2003 National Semiconductor Corporation

DS200594

www.national.com

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