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LM4549B Datasheet PDF - National ->Texas Instruments

Part NameDescriptionManufacturer
LM4549B AC ’97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound National-Semiconductor
National ->Texas Instruments National-Semiconductor
Other PDF  no available.
LM4549B Datasheet PDF : LM4549B pdf   
LM4549B image

General Description
The LM4549B is an audio codec for PC systems which is fully PC99 compliant and performs the analog intensive functions of the AC ’97 Rev 2.1 architecture. Using 18-bit Sigma-Delta ADCs and DACs, the LM4549B provides 90 dB of Dynamic Range.

Features
■ AC ’97 Rev 2.1 compliant
■ High quality Sample Rate Conversion from 4 kHz to 48 kHz in 1 Hz increments
■ Multiple codec support
■ True Line Level Output with separate gain control
■ National’s 3D Sound stereo enhancement circuitry
■ Advanced power management support
■ External Amplifier Power Down (EAPD) control
■ PC-Beep passthrough to Line Out during Initialization or Cold Reset
■ Digital 3.3V and 5V supply options
■ Extended Temperature: −40˚C ≤ TA ≤ 85˚C

Applications
■ Desktop PC audio systems on PCI cards, AMR cards, or with motherboard chips sets featuring AC Link
■ Portable PC systems as on MDC cards, or with a chipset or accelerator featuring AC Link
■ General and Multi-channel audio frequency systems
■ Automotive Telematics

 

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