The LM3886 is a high-performance audio power amplifiercapable of delivering 68W of continuous average power to a4Ω load and 38W into 8Ω with 0.1% THD+N from20Hz–20kHz.The performance of the LM3886, utilizing its Self Peak InstantaneousTemperature (˚Ke) (SPiKe™) protection circuitry,puts it in a class above discrete and hybrid amplifiersby providing an inherently, dynamically protected Safe OperatingArea (SOA). SPiKe protection means that these partsare completely safeguarded at the output against overvoltage,undervoltage, overloads, including shorts to the supplies,thermal runaway, and instantaneous temperaturepeaks.The LM3886 maintains an excellent signal-to-noise ratio ofgreater than 92dB with a typical low noise floor of 2.0µV. Itexhibits extremely low THD+N values of 0.03% at the ratedoutput into the rated load over the audio spectrum, and providesexcellent linearity with an IMD (SMPTE) typical ratingof 0.004%.
