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LM4732 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4732 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LM4732 Stereo 50W Audio Power Amplifier with Mute General Description The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4 Ω or 8Ω load with less than 10% THD+N from 20Hz - 20kHz. The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C. The LM4732 also has an under voltage lock out feature for click and pop free power on and off. Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute. The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used. The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions. Key Specifications j Output Power/Channel at 10% THD+N, 1kHz into 4 Ω or 8Ω 50W (typ) j THD+N at2x1W into 8 Ω, 1kHz 0.01% (typ) j Mute Attenuation 110dB (typ) j PSRR 89dB (typ) j Slew Rate 19V/µs (typ) Features n Low external component count n Quiet fade-in/out mute mode n Wide supply range: 20V - 80V Applications n Audio amplifier for component stereo n Audio amplifier for compact stereo n Audio amplifier for self-powered speakers n Audio amplifier for high-end and HD TVs Typical Application 20072422 FIGURE 1. Typical Audio Amplifier Application Circuit July 2003 © 2003 National Semiconductor Corporation DS200724 www.national.com |
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