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LM2876T-LM2876TF
High-Performance 40 Watt Audio Power Amplifier w/Mute
LM2876
Overture™ Audio Power Amplifier Series
High-Performance 40W Audio Power Amplifier w/Mute
General DescriptionThe LM2876isa high-performance audio power amplifier
capableof delivering 40Wof continuous average powerto8Ω load with 0.1% THD+N from 20Hz–20kHz.
The performanceof the LM2876, utilizingits Self PeakIn-
stantaneous Temperature (˚Ke) (SPiKe™) protection cir-
cuitry, putsitina class above discrete and hybrid amplifiers providingan inherently, dynamically protected Safe Op-
erating Area (SOA).
SPiKe protection means that these
parts are completely safeguardedatthe output against ov-
ervoltage, undervoltage, overloads, including shortsto the
supplies, thermal runaway, and instantaneous temperature
peaks.
The LM2876 maintainsan excellent signal-to-noise ratioof
greater than 95dB (min) witha typical low noise floorof
2.0µV.It exhibits extremely low THD+N valuesof 0.06%at
the rated output intothe rated load overthe audio spectrum,
and provides excellent linearity withan IMD (SMPTE) typical
ratingof 0.004%.
Features 40W continuous average output power into8Ω 75W instantaneous peak output power capability Signal-to-Noise Ratio≥95 dB(min)An input mute function Output protection froma shortto groundortothe
suppliesvia internal current limiting circuitry Output over-voltage protection against transients from
inductive loads Supply under-voltage protection,not allowing internal
biasingto occur when |VEE|+|VCC|≤ 12V, thus
eliminating turn-on and turn-off transients 11-lead TO-220 package Wide supply range 20V- 72V
Applications Component stereo Compact stereo Self-powered speakers Surround-sound amplifiers High-end stereo TVs
Typical Application01177501 Optional components dependent upon specific design requirements. Refertothe External Components Description sectionfora component functional
description.
FIGURE1. Typical Audio Amplifier Application CircuitAugust 2000
LM2876
Overture
Audio
Power
Amplifier
Series
High-Performance
40W
Audio
Power
Amplifier
w/Mute
