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