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LM4730 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4730 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 17 page  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 Ω or 8Ω 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˚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 n Output power into 4 Ω or 8Ω, 10% THD+N 14W (typ) n THD+N at 1kHz with2X1W into 8 Ω 0.02% (typ) n Mute Attenuation 85dB (typ) n PSRR with f RIPPLE = 120Hz, VRIPPLE =1VRMS 50dB (typ) n Slew Rate 18V/µs (typ) n Standby Current (+/-17V) 3.5mA (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 (Note 12) TO-220 Top Marking (Note 12) 20059452 Top View Non-Isolated Package Order Number LM4730TA See NS Package Number TA15A 20059474 Top View U - Wafer Fab Code Z - Assembly Plant Code XY - Date Code TT - Die Traceability LM4730TA - LM4730TA July 2003 © 2003 National Semiconductor Corporation DS200594 www.national.com |
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