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LM3875 Overture™ Audio Power Amplifier Series
High-Performance 56W Audio Power Amplifier
General Description
The LM3875 is a high-performance audio power amplifier
capable of delivering 56W of continuous average power to
an 8Ω load with 0.1% THD+N from 20Hz to 20kHz.
The performance of the LM3875, 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, caused by shorts to the
supplies, thermal runaway, and instantaneous temperature
peaks.
The LM3875 maintains an excellent signal-to-noise ratio of
greater than 95dB(min) with a typical low noise floor of
2.0μV. It exhibits extremely low THD+N values of 0.06% 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%.