GENERAL DESCRIPTION
The AD1984A audio codec and SoundMAX® software provide superior high definition audio quality that exceeds Vista Premium performance. The AD1984A has two 192 kHz DAC pairs, two 192 kHz ADC pairs, an S/PDIF output, a 2-channel digital microphone interface, and digital and analog PCBeep. These features make the AD1984A the right choice for desktop and notebook PCs where performance is key.

FEATURES
   Microsoft Vista Premium Logo for desktop
      96+ dB audio outputs, 90 dB audio inputs
      WLP 3.0 and 4.0
   Security feature prevents unauthorized recording
   2 stereo headphone amplifiers
   Internal 32-bit arithmetic for greater accuracy
   Impedance and presence detection on all jacks
   Full analog mixer with DAC inputs
   3 independent microphone bias pins
   Digital and analog PCBeep
   3 general-purpose digital I/O (GPIO) pins
   3.3 V analog supply voltage
   1.7 V to 1.9 V or 3.3 V digital supply voltages
   1.5 V or 3.3 V HD Audio link signaling voltage
   Advanced power management modes
   48-lead, RoHS compliant LFCSP_VQ package
  
192 kHz DACs/ADCs
   2 independent stereo DAC/ADC pairs
   Simultaneous record of 2 stereo channels
   Simultaneous playback of 2 stereo channels
   Independent 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,
      44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz
      sample rates
   16-, 20-, and 24-bit resolution
   Selectable stereo mixer on outputs
  
STEREO DIGITAL MICROPHONE INTERFACE
   Two 192 kHz digital microphone channels
   Supports 1 or 2 microphones per pin
   Selectable bit clock rates of 1.5 MHz, 2.0 MHz, and 3.0 MHz
   Mono and stereo array support
   8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz,
      48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz
      sample rates
   16-, 20-, and 24-bit resolution

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

AUXILIARY PINS
   Stereo CD/auxiliary I/O port with ground sense
   Stereo auxiliary/dock I/O port
   Mono out pin for internal speakers or telephony