LM4549B - AC 97 Rev 2.1 Multi-Channel Audio Codec

National Semiconductor

The LM4549B by National Semiconductor is a AC 97 Rev 2.1 Multi-Channel Audio Codec. Below is the official datasheet preview.

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LM4549B AC 97 Rev 2.1 Multi-Channel Audio Codec by National Semiconductor - Datasheet Preview — Official preview page of the **LM4549B** AC 97 Rev 2.1 Multi-Channel Audio Codec datasheet (National Semiconductor).

Datasheet Details

Part number	LM4549B
Manufacturer	National Semiconductor
File Size	956.49 KB
Description	AC 97 Rev 2.1 Multi-Channel Audio Codec
Datasheet	LM4549B_NationalSemiconductor.pdf
Additional preview pages of the LM4549B datasheet.

LM4549B Product details

Description

The LM4549B is an audio codec for PC systems which is fully PC99 compliant and performs the analog intensive functions of the AC ’97 Rev 2.1 architecture.

Features

full duplex stereo ADCs and DACs and analog mixers with access to 4 stereo and 4 mono inputs. Each mixer input has separate gain, attenuation and mute control and the mixers drive 1 mono and 2 stereo outputs, each with attenuation and mute control. The LM4549B supports National’s 3D Sound stereo enhancement and a comprehensive sample rate conversion capability. The sample rate for the ADCs and DACs can be programmed separately with a resolution of 1 Hz to convert any rate in the range 4 kHz.

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Published: Nov 10, 2010 |