Part LM4546
Description AC97 Codec
Manufacturer National Semiconductor
Size 308.41 KB
National Semiconductor
LM4546

Overview

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.

  • Analog Mixer Dynamic Range
  • D/A Dynamic Range
  • A/D Dynamic Range 97dB (typ) 89dB (typ) 90dB (typ) Features
  • AC’97 Rev 2 compliant
  • National’s 3D Sound circuitry
  • High quality Sample Rate Conversion (SRC) from 4kHz to 48kHz in 1Hz increments
  • Multiple Codec support
  • Advanced power management support
  • Digital 3V and 5V compliant