LM4550 Datasheet | National Semiconductor

LM4550 AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound December 2002 LM4550 AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound General Description The LM4550 is an audio codec for PC systems which is fully PC99 pliant and performs the analog intensive functions of the AC97 Rev2.1 architecture. Using 18-bit Sigma-Delta A/D’s and D/A’s, the LM4550 provides 90 dB of Dynamic Range. The LM4550 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...