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LM4546B Datasheet AC 97 Rev 2 Multi-channel Audio Codec

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM4546B AC ’97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound September 2006 LM4546B AC ’97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D.

General Description

The LM4546B 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 LM4546B provides 90 dB of Dynamic Range.

The LM4546B 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 ADCs and DACs and analog mixers with access to 2 stereo and 2 mono inputs. Each mixer input has separate gain, attenuation and mute control and the mixers drive 1 mono and 1 stereo output, each with attenuation and mute control. The LM4546B supports National’s 3D Sound stereo enhancement and a comprehensive sample rate conversion capability. The sample rate for the ADCs and DACs can be programmed separately with a resolution of 1 Hz to convert any rate in the range 4 kHz.

Similar Datasheet

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

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LM4546B Distributor