LM4546 Datasheet (National Semiconductor)

LM4546, AC97 Codec

The LM4546 is an audio codec for PC systems which is fully PC98 compliant and performs the analog intensive functions of the AC97 Rev 2 architecture.

Using 18-bit Sigma-Delta A/D’s and D/A’s, the LM4546 provides 90dB of Dynamic Range.

The LM4546 was designed specifically to provide a high quality au

LM4546 Features

* full duplex stereo A/D’s and D/A’s and an analog mixer with 2 stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. The LM4546 also provides National’s 3D Sound stereo enhancement. The LM4546 supports variable sample rate conversion as defined in the AC97 Rev2 spec