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LM4700 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4700 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 15 page 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 deliver- ing typically 30W of continuous average output power into an 8 Ω 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 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 completely safeguarded at the output against over- voltage, 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 8 Ω: 0.1% (max) n THD+N from 20 Hz to 20 kHz at 30W of continuous average output power into 8 Ω: 0.08% (typ) n Standby current: 2.1 mA (typ) Features n SPiKe Protection n Minimal amount of external components necessary n Quiet fade-in/out mute function n Power conserving standby-mode n Isolated 11-lead TO-220 package Applications n Component stereo n Compact stereo Typical Application Connection Diagram SPiKe™ Protection and Overture™ are trademarks of National Semiconductor Corporation. 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 Isolated Plastic Package DS012369-2 Top View Order Number LM4700TF See NS Package Number TF11B March 1998 © 1999 National Semiconductor Corporation DS012369 www.national.com |
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