TLA09ZZA Datasheet 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level

Manufacturer: National Semiconductor (now Texas Instruments)

TLA09ZZA 2 watt audio power amplifier with selectable shutdown logic level by National Semiconductor (now Texas Instruments) - Datasheet Preview

Datasheet Details

Part number	TLA09ZZA
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	728.94 KB
Description	2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level
Download	TLA09ZZA Download (PDF)

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.

Overview

LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level January 2004 LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic.

Key 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.

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