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LM4700

National Semiconductor
Part Number LM4700
Manufacturer National Semiconductor
Description Overture Audio Power Amplifier
Published Mar 22, 2005
Detailed Description LM4700 Overture Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes March 1998 LM4700 O...
Datasheet PDF File LM4700 PDF File

LM4700
LM4700

Overview
LM4700 Overture Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes March 1998 LM4700 Overture™ Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes General Description The LM4700 is an audio power amplifier capable of delivering typically 30W of continuous average output power into an 8Ω load with less than 0.
1% (THD + N).
The LM4700 has an independent smooth transition fade-in/ out mute and a power conserving standby mode which can be controlled by external logic.
The performance of the LM4700, 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 completely safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks.
Key Specifications n THD+N at 1 kHz at continuous average output power of 25W into 8Ω: 0.
1% (max) n THD+N from 20 Hz to 20 kHz at 30W of continuous average output power into 8Ω: 0.
08% (typ) n Standby current: 2.
1 mA (typ) Features n n n n n SPiKe Protection Minimal amount of external components necessary Quiet fade-in/out mute function Power conserving standby-mode Isolated 11-lead TO-220 package Applications n Component stereo n Compact stereo Typical Application Connection Diagram Isolated Plastic Package DS012369-2 Top View Order Number LM4700TF See NS Package Number TF11B DS012369-1 *Optional components dependent upon specific design requirements.
Refer to the External Components Description section for a component functional description.
FIGURE 1.
Typical Audio Amplifier Application Circuit SPiKe™ Protection and Overture™ are trademarks of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS012369 www.
national.
com Absolute Maximum Ratings (Notes 4, 5) If Milita...


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