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