LM4548 - AC97 Codec

Product Overview

National Semiconductor

Part number	LM4548
Manufacturer	National Semiconductor
File Size	322.23 KB
Description	AC97 Codec
Datasheet	LM4548 Datasheet
Additional preview pages of the LM4548 datasheet.

The LM4548 is an audio codec for PC systems which is fully PC98 compliant and performs the analog intensive functions of the AC97 Rev2 architecture.

Using 18-bit Sigma-Delta A/D’s and D/A’s, the LM4548 provides 90dB of Dynamic Range.

full duplex stereo A/D’s and D/A’s and an analog mixer with 4 stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. The LM4548 also provides the additional True Line-Level output and National’s 3D Sound stereo enhancement. The LM4548 supports variable sample rate conversion as defined in the AC97 Rev2 specification. The sample rate for the A/D and D/A can be programmed separately to convert any rate between 4kHz - 48kHz with a resolution of 1Hz. The AC97 archit.

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Published: Mar 22, 2005 |