1FEATURES
23• SPiKe Protection
• Minimal Amount of External Components
Necessary
• Quiet Fade-In/Out Mute Mode
• Non-Isolated 15-Lead TO-220 Package
• Wide Supply Range 20V - 78V

APPLICATIONS
• High-End Stereo TVs
• Component Stereo
• Compact Stereo

KEY SPECIFICATIONS
• THD+N at 1kHz at 2 x 30W Continuous
Average Output Power Into 8Ω 0.1% (Max)
• THD+N at 1kHz at Continuous Average Output
Power of 2 x 30W Into 8Ω 0.009% (Typ)

DESCRIPTION
The LM4766 is a stereo audio amplifier capable of
delivering typically 40W per channel with the non-
isolated "NDL" package and 30W per channel with
the isolated "NDB" package of continuous average
output power into an 8Ω load with less than 0.1%
(THD+N).
The performance of the LM4766, utilizing its Self
Peak Instantaneous Temperature (°Ke) (SPiKe)
Protection Circuitry, places 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 safeguarded at the output against overvoltage,
undervoltage, overloads, including thermal runaway
and instantaneous temperature peaks.
Each amplifier within the LM4766 has an independent
smooth transition fade-in/out mute that minimizes output pops. The IC's extremely low noise floor at
2μV and its extremely low THD+N value of 0.06% at
the rated power make the LM4766 optimum for highend
stereo TVs or minicomponent systems.