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LM4831 - Multimedia Computer Audio-Chip

Datasheet Summary

Description

The LM4831 is a monolithic integrated circuit that provides a stereo three input mixer, two stereo input analog multiplexer, a stereo line out and a dual 1W bridged audio power amplifier.

In addition, a low noise microphone preamp is included on-chip.

Features

  • an externally controlled, low-power consumption shutdown mode, as well as both headphone and docking station modes. To temporarily override the shutdown mode and allow audio signals to be amplified, the LM4831 provides four “beep” pins. Key Specifications n THD+N at 1W into 8Ω n Microphone Input Referred Noise n Supply Current - Bridged Mode n Shutdown Current 0.6% (typ) 10µV (typ) 16mA (typ) 2µA (typ) Features Stereo 1W audio power amplifier “Click and pop” suppression circuitry Stereo three.

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Datasheet preview – LM4831

Datasheet Details

Part number LM4831
Manufacturer National Semiconductor
File Size 576.00 KB
Description Multimedia Computer Audio-Chip
Datasheet download datasheet LM4831 Datasheet
Additional preview pages of the LM4831 datasheet.

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Full PDF Text Transcription

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LM4831 Multimedia Computer Audio Chip November 1998 LM4831 Multimedia Computer Audio Chip General Description The LM4831 is a monolithic integrated circuit that provides a stereo three input mixer, two stereo input analog multiplexer, a stereo line out and a dual 1W bridged audio power amplifier. In addition, a low noise microphone preamp is included on-chip. The LM4831 is ideal for multimedia computers since it incorporates an input mixer, analog multiplexer, and configurable stereo audio power amplifier, as well as a microphone preamp stage. This combination allows for all of the analog audio processing to be enclosed in a 44-pin TQFP package. The LM4831 features an externally controlled, low-power consumption shutdown mode, as well as both headphone and docking station modes.
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