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
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