LM4766

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SNAS031F – SEPTEMBER 1998 – REVISED MARCH 2013

LM4766 Overture™ Audio Power Amplifier Series

Dual 40W Audio Power Amplifier with Mute

Check for Samples: LM4766

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FEATURES

DESCRIPTION

The LM4766 is a stereo audio amplifier capable of

23

•

SPiKe Protection

delivering typically 40W per channel with the non-

•

Minimal Amount of External Components

isolated "NDL" package and 30W per channel with

Necessary

the isolated "NDB" package of continuous average

•

Quiet Fade-In/Out Mute Mode

output power into an 8

Ω load with less than 0.1%

(THD+N).

•

Non-Isolated 15-Lead TO-220 Package

The performance of the LM4766, utilizing its Self

•

Wide Supply Range 20V - 78V

Peak

Instantaneous

Temperature

(°Ke)

(SPiKe)

Protection Circuitry, places it in a class above

APPLICATIONS

discrete

and

hybrid

amplifiers

by

providing

an

•

High-End Stereo TVs

inherently, dynamically protected Safe Operating

•

Component Stereo

Area (SOA). SPiKe Protection means that these parts

are safeguarded at the output against overvoltage,

•

Compact Stereo

undervoltage, overloads, including thermal runaway

and instantaneous temperature peaks.

KEY SPECIFICATIONS

Each amplifier within the LM4766 has an independent

•

THD+N at 1kHz at 2 x 30W Continuous

smooth transition fade-in/out mute that minimizes

Average Output Power Into 8

Ω 0.1% (Max)

output pops. The IC's extremely low noise floor at

•

THD+N at 1kHz at Continuous Average Output

2µV and its extremely low THD+N value of 0.06% at

Power of 2 x 30W Into 8

Ω 0.009% (Typ)

the rated power make the LM4766 optimum for high-

end stereo TVs or minicomponent systems.

Connection Diagram

Figure 1. Plastic Package

Top View

Non-Isolated TO-220 Package

See Package Number NDL0015A

Isolated PFM Package

See Package Number NDB0015B

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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Overture is a trademark of Texas Instruments.

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All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 1998–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.