GENERAL DESCRIPTION
SPiKe provides a dynamically optimized Safe Operating Area (SOA). SPiKe protection completely safeguards the LM4780’s outputs against over-voltage, under-voltage, overloads, shorts to the supplies or GND, thermal runaway and instantaneous temperature peaks. Each amplifier of the LM4780 has an independent smooth transition fade-in/out mute. The LM4780 can easily be configured for bridge or parallel operation for 120W mono solutions. Key Specifications n Output Power/Channel with 0.5% THD+N, 1kHz into 8Ω 60W (typ) n THD+N at 2 x 30W into 8Ω (20Hz - 20kHz) 0.03% (typ) n THD+N at 2 x 30W into 6Ω (20Hz - 20kHz) 0.05% (typ) n THD+N at 2 x 30W into 4Ω (20Hz - 20kHz) 0.07% (typ) n Mute Attenuation 110dB (typ) n PSRR 85dB (min) n Slew Rate 19V/µs (typ) FEATURES
n n n n n SPiKe Protection Low external component count Quiet fade-in/out mute mode Wide supply range: 20V - 84V Signal-to-Noise Ratio ≥ 97dB (ref. to PO = 1W) APPLICATIONS
n n n n Audio Audio Audio Audio amplifier am...
National Semiconductor
