LM4766_06 Datasheet, PDF (1/19 Pages) National Semiconductor (TI) – Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute

March 2006
LM4766 Overture^™
Audio Power Amplifier Series Dual 40W Audio Power
Amplifier with Mute
General Description
The LM4766 is a stereo audio amplifier capable of delivering
typically 40W per channel with the non-isolated "T" package
and 30W per channel with the isolated "TF" 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 In-
stantaneous Temperature (˚Ke) (SPiKe™) Protection Cir-
cuitry, places it in a class above discrete and hybrid amplifi-
ers 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 in-
stantaneous 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 high-end stereo TVs or mini-
component systems.
Key Specifications
j THD+N at 1kHz at 2 x 30W continuous
average output power into 8Ω
j THD+N at 1kHz at continuous average
output power of 2 x 30W into 8Ω
0.1% (max)
0.009% (typ)
Features
n SPiKe Protection
n Minimal amount of external components necessary
n Quiet fade-in/out mute mode
n Non-Isolated 15-lead TO-220 package
n Wide Supply Range 20V - 78V
Applications
n High-end stereo TVs
n Component stereo
n Compact stereo
Connection Diagram
Plastic Package
10092802
Top View
Non-Isolated TO-220 Package
Order Number LM4766T
See NS Package Number TA15A
Isolated TO-220 Package
Order Number LM4766TF
See NS Package Number TF15B
SPiKe™ Protection and Overture™ are trademarks of National Semiconductor Corporation.
© 2006 National Semiconductor Corporation DS100928
www.national.com