NATIONAL SEMICONDUCTOR LM48411 Manual
The LM48411 is a single supply, high efficiency, 2.5W/channel Class D audio amplifier from National Semiconductor. It features the company's unique patented ultra low EMI, spread spectrum, PWM architecture, which significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system also improves battery life, reduces external component count, board area consumption, system cost and simplifies design. The LM48411 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The wide band spread spectrum architecture of the LM48411 reduces EMI-radiated emissions due to the modulator frequency. The LM48411 features high efficiency compared to a conventional Class AB amplifier. The E2S system includes an advanced, patented pending edge rate control (ERC) architecture that further reduce emissions by minimizing the high frequency component of the device output, while maintaining high quality audio reproduction and high efficiency (η = 87% at VDD = 3.6V, PO = 500mW). Four gain options are pin se- lectable through GAIN0 and GAIN1 pins.
Brand: National
File format: PDF
Size: 446 KB
MD5 Checksum: C782D16A167C479FA9D7BAE66570DAEB
Publication date: 04 May, 2012
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PDF Link: NATIONAL SEMICONDUCTOR LM48411 Manual PDF