The LM2876 is a high-performance audio power amplifier
capable of delivering 40W of continuous average power to
an 8W load with 0.1% THD+N from 20Hz–20kHz.
The performance of the LM2876, 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 LM2876 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%.
Features
n 40W continuous average output power into 8W
n 75W instantaneous peak output power capability
n Signal-to-Noise Ratio 3 95 dB(min)
n An input mute function
n Output protection from a short to ground or to the
supplies via internal current limiting circuitry
n Output over-voltage protection against transients from
inductive loads
n Supply under-voltage protection, not allowing internal
biasing to occur when |VEE| + |VCC| ￡ 12V, thus
eliminating turn-on and turn-off transients
n 11-lead TO-220 package
n Wide supply range 20V - 72V
Applications
n Component stereo
n Compact stereo
n Self-powered speakers
n Surround-sound amplifiers
n High-end stereo TVs