AD1981A

Obsolete

AC'97 SoundMAX® Codec

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Built-In Equalizer Function
  • Full Duplex Variable Sample Rates from 7040 Hz to 48 kHz with 1 Hz Resolution
  • Jack Sense Pins Provide Automatic Output Switching
  • Mobile Low Power Mixer Mode
  • Software Programmed VREFOUT Output for Microphones and External Power Amp
  • Extended 6-bit Master Volume Control
  • Extended 6-bit Headphone Volume Control
  • Digital Audio Mixer Mode
  • Split Power Supplies (3.3 V digital/5 V analog)

The AD1981A is used to add analog and digital audio capabilities to computer motherboards by connecting directly to the AC'97 core logic chipset. By reusing existing system resources, this solution adds flexibility, improves sound quality, and lowers the system BOM cost by integrating components.

AD1981A
AC'97 SoundMAX® Codec
59253303687021AD1981A-fbl
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Documentation

Data Sheet 1

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