Power Amplifier. LM4730 Datasheet

LM4730 Amplifier. Datasheet pdf. Equivalent

Part LM4730
Description Stereo 14W Audio Power Amplifier
Feature LM4730 Stereo 14W Audio Power Amplifier with Mute and Standby Modes OBSOLETE LM4730 October 26, 2.
Manufacture National Semiconductor
Datasheet
Download LM4730 Datasheet



LM4730
LM4730
OBSOLETE
October 26, 2009
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 pow-
er into a 4or 8load 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 ex-
ceeds 150°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 4or 8, 10% THD+N 14W (typ)
THD+N at 1kHz with 2 X 1W into 8
0.02% (typ)
Mute Attenuation
85dB (typ)
PSRR with fRIPPLE = 120Hz, VRIPPLE = 1VRMS 50dB (typ)
Slew Rate
18V/µs (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
Audio amplifier for component stereo
Audio amplifier for compact stereo
Audio amplifier for PC satellite speaker systems
Audio amplifier for self powered speakers
Connection Diagrams
Plastic Package (Note 12)
TO-220 Top Marking (Note 12)
Top View
Non-Isolated Package
Order Number LM4730TA
See NS Package Number TA15A
20059452
Top View
20059474
U - Wafer Fab Code
Z - Assembly Plant Code
XY - Date Code
TT - Die Traceability
LM4730TA - LM4730TA
© 2009 National Semiconductor Corporation 200594
200594 Version 3 Revision 2 Print Date/Time: 2009/10/26 15:41:58
www.national.com



LM4730
Typical Application
FIGURE 1. Typical Audio Amplifier Application Circuit
20059453
www.national.com
2
200594 Version 3 Revision 2 Print Date/Time: 2009/10/26 15:41:58





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