LM4681 - Stereo CLASS D Audio Power Amplifier

Product Overview

National Semiconductor

Datasheet Details

Part number	LM4681
Manufacturer	National Semiconductor
File Size	0.96 MB
Description	Stereo CLASS D Audio Power Amplifier
Datasheet	LM4681 Datasheet
Additional preview pages of the LM4681 datasheet.

Product details

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.

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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Published: Nov 24, 2006 |