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LM4546 Datasheet AC97 Codec

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM4546 AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound February 1999 LM4546 AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D.

General Description

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 audio path and provide all analog functionality in a PC audio system.

Key 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 specification. The sample rate for the A/D and D/A can be programmed separately to convert any rate between 4kHz - 48kHz with a resolution of 1Hz. The AC97 architecture separates the analog and digital fu.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo LM4546 AC97 Rev2 Codec Texas Instruments
Texas Instruments Logo LM4546A AC97 Rev2 Multi-Channel Audio Codec Texas Instruments
Texas Instruments Logo LM4546B Multi-Channel Audio Codec Texas Instruments

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LM4546A 2 Multi-Channel Audio Codec
LM4546B AC 97 Rev 2 Multi-Channel Audio Codec
LM4540 AC97 Codec
LM4543 AC97 Codec
LM4545 AC97 Codec
LM4548 AC97 Codec
LM4548A 2 Multi-Channel Audio Codec
LM4549 AC97 Codec
LM4549A 2 Multi-Channel Audio Codec
LM4549B AC 97 Rev 2.1 Multi-Channel Audio Codec

LM4546 Distributor