LM4781 Datasheet | Texas Instruments

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