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LM4766 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4766
Description  Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com

LM4766 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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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 of continuous average output
power into an 8
Ω 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, un-
dervoltage, 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 2 µV and its ex-
tremely 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 1 kHz at 2 x 30W continuous average
output power into 8
0.1% (max)
j THD+N at 1 kHz at continuous average
output power of 2 x 30W into 8
0.009% (typ)
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 High-end stereo TVs
n Component stereo
n Compact stereo
Typical Application
Note: Numbers in parentheses represent pinout for amplifier B.
*Optional component dependent upon specific design requirements.
Connection Diagram
SPiKeProtection and Overtureare trademarks of National Semiconductor Corporation.
FIGURE 1. Typical Audio Amplifier Application Circuit
Plastic Package
Top View
Non-Isolated Package
Order Number LM4766T
See NS Package Number TA15A
September 1998
© 1999 National Semiconductor Corporation

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