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High-Performance 68W Audio Power Amplifier with MuteFeatures68W cont. avg. output power into 4 at VCC = ±28V38W cont. avg. output power into 8 at VCC = ±28V50W cont. avg. output power into 8 at VCC = ±35V135W instantaneous peak output power capabilitySignal-to-Noise Ratio >= 92dBAn input mute functionOutput protection from a short to ground or to the supplies via internal current limiting circuitryOutput over-voltage protection against transients from inductive loadsSupply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients11-lead TO-220 packageWide supply range 20V - 94VDescriptionThe LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.ApplicationsComponent stereoCompact stereoSelf-powered speakersSurround-sound amplifiersHigh-end stereo TVs