GENERAL DESCRIPTION

The AD1987 audio codec and SoundMAX? software provides superior HD audio quality that exceeds Vista Premium performance. The AD1987 has eight DACs and four ADCs, three stereo headphone ports, C/LFE swapping, digital and analog PCBeep, and S/PDIF output, making the AD1987 the right choice for desktop PCs where performance is the primary consideration.

FEATURES

3 stereo headphones

Microsoft Vista Premium logo for desktop

95 dB audio outputs, 90 dB audio inputs

Internal 32-bit arithmetic for greater accuracy

Impedance and presence detection on all jacks

Retaskable jacks

4 independent microphone bias pins

Digital and analog PCBeep

C/LFE channel swapping

2 general-purpose digital I/O (GPIO) pins

Advanced power management modes

48-lead LFCSP_VQ package

EIGHT 192 kHz DACs

4 independent stereo DAC pairs

7.1 surround sound or 5.1 stereo out plus independent

headphone

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 PCM resolution

Selectable stereo mixer on outputs

FOUR 96 kHz ADCs

2 independent stereo ADC pairs

Simultaneous record of up to 4 channels

Independent 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,

44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz sample rates

16-, 20-, and 24-bit PCM resolution

Support for quad microphone arrays

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, AC3

Digital PCM gain control

DEDICATED AUXILIARY PINS

Stereo CD/auxiliary I/O port w/GND sense

Mono out pin for internal speakers or telephony