LM4545 Datasheet - National Semiconductor

LM4545 AC97 Codec

The LM4545 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 LM4545 provides 90dB of dynamic range. The LM4545 was designed specifically to provide a high quality audio path and pro.

LM4545 Features

* full duplex stereo A/D’s and D/A’s and an analog mixer with 4 stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. In addition, the LM4545 provides a stereo headphone amplifier with an independent gain control and National’s 3D Sound stereo enhancement technology.

LM4545_NationalSemiconductor.pdf