LM4540 Datasheet - National Semiconductor

LM4540 AC97 Codec

The LM4540 is an audio codec for PC systems which performs the analog-intensive function of the Analog Codec ’97 Rev 1.03 architecture. Using 18-Bit Σ∆ A/D and D/A converters, the LM4540 provides 90dB of dynamic range. The LM4540 was designed specifically to provide a high quality audio path and pro.

LM4540 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. In addition, the LM4540 provides National’s 3D Sound stereo enhancement technology. The LM4540 features AC-Link, a synchronous, fixed rate serial bus

LM4540 Datasheet (298.51 KB)