GENERAL DESCRIPTION
The AD1984 family of audio codecs and SoundMAX® software provides superior High Definition audio quality that exceeds Vista Premium performance. The AD1984 has four 192 kHz DACs, four 192 kHz ADCs, S/PDIF output, a four-channel digital microphone interface, Digital Beep and analog PCBeep. These features make the AD1984 the right choice for desktop and notebook PCs where performance is key.
The AD1984 is available in a 48-lead, Pb-free frame chip scale package in both reels and trays. See Ordering Guide on Page 20

FEATURES
FOUR 192 kHz DACs/ADCs
   Two independent stereo DAC/ADC pairs
   Simultaneous record of two stereo channels
   Simultaneous playback of two stereo channels
   Independent 8, 11.025, 16, 22.05, 32, 44.1,
      48, 88.2, 96, 176.4, and 192 kHz sample rates
   16, 20, and 24-bit resolution
   Selectable stereo mixer on outputs

4-CHANNEL DIGITAL MICROPHONE INTERFACE
   Four 192 kHz digital microphone channels
   Supports multiple microphone types
      Two microphones per pin (four total)
      One microphone per pin (two total)
   Low pin count, uses 3 pins
   Stereo or quad array support
   8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96,
      176.4, and 192 kHz sample rates
   16, 20, and 24-bit resolution

S/PDIF OUTPUT
   Supports 44.1, 48, 88.2, 96, 176.4, and 192 kHz sample rates
   16, 20, and 24-bit data; PCM, and AC3 formats
   Digital PCM gain control

DEDICATED AUXILLARY PINS
   Stereo CD/auxillary I/O port w/GND sense
   Stereo auxillary/dock I/O port
   Mono out pin for internal speakers or telephony
  
ENHANCED FEATURES
   Two stereo headphone amplifiers
   Microsoft Vista premimum logo for notebook and desktop
      96+ dB audio outputs, 90+ dB audio inputs
   Internal 32-bit arithmetic for greater accuracy
   Impedance and presence detection on all jacks
   Three independent microphone bias pins
   Digital and analog PCBeep
   Three general-purpose digital I/O (GPIO) pins
   3.3 V analog and digital supply voltages
   Advanced power management modes
   48-lead, Pb-free LFCSP_VQ package