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LM4681 Datasheet Stereo CLASS D Audio Power Amplifier

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The LM4681 is a fully integrated single supply, CLASS D audio power amplifier solution.

The LM4681 utilizes a proprietary balanced pulse-width modulation technique that lowers output noise and THD and improves PSRR when compared to conventional pulse width modulators.

The LM4681 also

Overview

www.DataSheet4U.com LM4681 10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control March 2006 LM4681 10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone.

Key Features

  • a stereo headphone amplifier that delivers 80mW into a 32Ω headset with less than 0.5% THD. The LM4681’s I2C/SPI (selectable) volume control has a +30dB to.
  • 48dB range when speakers are driven and a range of +13dB to.
  • 65dB when headphones are connected. All amplifiers are protected by thermal shutdown. Additionally, the high efficiency power amplifiers have output current limit. With a 8Ω load, the IC’s efficiency for a 6W power level is 85%. The IC features click and pop reducti.

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