LM4548 Datasheet | National Semiconductor

LM4548 AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound February 1999 LM4548 AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound General Description The LM4548 is an audio codec for PC systems which is fully PC98 pliant 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. The LM4548 was designed specifically to provide a high quality audio path and provide all analog functionality in a PC audio system. It Features 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,...