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LM4830 - Two-Way Audio Amplification

Datasheet Summary

Description

The LM4830 is an integrated solution for two-way audio amplification.

It contains a bridge-connected audio power amplifier capable of delivering 1W of continuous average power to an 8Ω load with less than 1% THD from a 5V power supply.

Features

  • 4-bit digital control for 30 dB of volume attenuation Two selectable microphone inputs High performance microphone preamp Extra buffer for driving long cables No bootstrap capacitors or snubber circuits are necessary n Small Outline (SO) packaging n Thermal shutdown protection circuitry n n n n n.

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Datasheet Details

Part number LM4830
Manufacturer National Semiconductor
File Size 458.94 KB
Description Two-Way Audio Amplification
Datasheet download datasheet LM4830 Datasheet
Additional preview pages of the LM4830 datasheet.

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Full PDF Text Transcription

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LM4830 Two-Way Audio Amplification System with Volume Control January 1999 LM4830 Two-Way Audio Amplification System with Volume Control General Description The LM4830 is an integrated solution for two-way audio amplification. It contains a bridge-connected audio power amplifier capable of delivering 1W of continuous average power to an 8Ω load with less than 1% THD from a 5V power supply. It also has the capability of driving 100 mW into a single-ended 32Ω impedance for headset operation. There is a 30 dB attenuator in front of a bridged power amplifier with 6 dB of gain. The attenuation is controlled through 4 bits of parallel digital control; 15 steps of 2 dB each. The device also contains a microphone preamp with two selectable inputs.
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