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Features
Low external component count
Quiet fade-in/out mute mode
Wide supply range: 20V - 80V
Description The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power
into a 4Ω 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 Specification
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Output Power/Channel at 10% THD+N,
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1kHz into 4Ω or 8Ω
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50W (typ)
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THD+N at 2 x 1W into 8Ω, 1kHz
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0.01% (typ)
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Mute Attenuation
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110dB (typ)
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PSRR
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89dB (typ)
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Slew Rate
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19V/µs (typ)
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Applications
Audio amplifier for component stereo
Audio amplifier for compact stereo
Audio amplifier for self-powered speakers
Audio amplifier for high-end and HD TVs
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