LM4897 Datasheet PDF (1.1Watt Audio Power Amplifier) | Download National Semiconductor LM4897

LM4897 - 1.1Watt Audio Power Amplifier

Description

The LM4897 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

It is capable of delivering 1.1W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a +5VDC power supply.

Features

a low-power consumption global shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4897 features an internal thermal shutdown protection mechanism. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4897 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable.

Datasheet Details

Part number	LM4897
Manufacturer	National Semiconductor
File Size	612.62 KB
Description	1.1Watt Audio Power Amplifier
Datasheet	LM4897 Datasheet
Additional preview pages of the LM4897 datasheet.

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Full PDF Text Transcription

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LM4897 1.1 Watt Audio Power Amplifier with Fade-In and Fade-Out May 2003 LM4897 1.1 Watt Audio Power Amplifier with Fade-In and Fade-Out General Description The LM4897 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a +5VDC power supply. The LM4897 contains advanced pop and click circuitry that eliminate noises which would otherwise occur during turn-on and turn-off transitions. It also contains a fade-in/fade-out feature that eliminates unnatural sound generated by asserting/de-asserting the SHUTDOWN pin.

Published: Mar 22, 2005 |