LM4990 Datasheet PDF - National Semiconductor 2 Watt Audio Power Amplifier Specs

LM4990 - 2 Watt Audio Power Amplifier

Datasheet Summary

Description

The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

Features

a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown pin to be driven in a likewise manner to enable shutdown. The LM4990 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions. The LM4990 is unity-gain stable and can be configured by external gain-setting resistors.

Datasheet Details

Part number	LM4990
Manufacturer	National Semiconductor
File Size	728.94 KB
Description	2 Watt Audio Power Amplifier
Datasheet	LM4990 Datasheet
Additional preview pages of the LM4990 datasheet.

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Full PDF Text Transcription

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LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level January 2004 LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level General Description The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (LD and MH only) to a 4Ω BTL load with less than 1% distortion (THD+N+N) from a 5VDC power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components.

Published: Mar 22, 2005 |