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LM4781TABD Datasheet(PDF) 1 Page - Texas Instruments |
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LM4781TABD Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page LM4781, LM4781TABD www.ti.com SNAS208A – AUGUST 2003 – REVISED APRIL 2013 LM4781 Overture™ Audio Power Amplifier Series 3 Channel 35W Audio Power Amplifier with Mute Check for Samples: LM4781, LM4781TABD 1 FEATURES DESCRIPTION The LM4781 is a three channel audio amplifier 23 • SPiKe Protection capable of typically delivering 35W per channel of • Low External Component Count continuous average output power into an 8 Ω load • Quiet Fade-In/Out Mute Mode with less than 0.5% THD+N from 20Hz - 20kHz. • Wide Supply Range: 20V - 70V The LM4781 is fully protected utilizing TI's Self Peak • Signal-to-Noise Ratio ≥ 93dB (ref. to PO = 1W) Instantaneous Temperature (°Ke) (SPiKe) protection circuitry. SPiKe provides a dynamically optimized Safe Operating Area (SOA). SPiKe protection APPLICATIONS completely safeguards the LM4781's outputs against • Audio Amplifier for Component Stereo over-voltage, under-voltage, overloads, shorts to the • Audio Amplifier for Compact Stereo supplies or GND, thermal runaway and instantaneous temperature peaks. The advanced protection features • Audio Amplifier for Self-Powered Speakers of the LM4781 places it in a class above discrete and • Audio Amplifier for High-End and HD TVs hybrid amplifiers. Each amplifier of the LM4781 has an independent KEY SPECIFICATIONS smooth transition fade-in/out mute. • Output Power/Channel with 0.5% THD+N, 1kHz The LM4781 can easily be configured for bridge or into 8 Ω: 35W (typ) parallel operation for higher power and bi-amp • THD+N at 3 x 20W into 8 Ω (20Hz - 20kHz): 0.2% solutions. (typ) • THD+N at 3 x 20W into 6 Ω (20Hz - 20kHz): 0.3% (typ) • THD+N at 3 x 20W into 4 Ω (20Hz - 20kHz): 0.5% (typ) • Mute Attenuation: 110dB (typ) • PSRR: 85dB (min) • Slew Rate: 9V/ μs (typ) 1 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. 2 Overture is a trademark of dcl_owner. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2013, 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. |
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