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    | Partname: | LM4550 |  
    | Description: | AC ??97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound |     
    | Manufacturer: | National Semiconductor |  
    | Datasheet: | PDF (507K). Click here to download *) |  
    The LM4550 is an audio codec for PC systems which is fully PC99 compliant 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.  |  
    
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    Click here to download LM4550 Datasheet*) | 
  
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