SigmaTel STAC9703
The STAC9701/3 incorporates SigmaTel’s proprietary Sigma-Delta technology to achieve signal quality in excess of 95dB SNR. The DACs, ADCs, and mixers are integrated with analog I/Os which include four analog line-level stereo inputs, two analog line-level mono inputs, and 3 output channels. The Audio Codec 97 specification calls for separation of the basic analog codec functions from the high level digital control functions for improved noise immunity.GENERAL DESCRIPTION
: SigmaTel’s STAC9701/3 are general purpose 18-bit, full duplex, audio codecs that conform to the analog component specification of AC 97 (Audio Codec 97 Component Specification rev. 1.03). The STAC9701/3 communicates via the five wire AC Link to any digital component of AC 97 providing flexibility in the audio system design. Packaged in a small AC 97 compliant 48-pin LQFP, the STAC9701/3 can be placed on the motherboard, daughter boards, add-on cards, PCMCIA cards, or outside the main chassis such as in a speaker. The 9703 is identical to the 9701 except that the 9703 is tested at AVdd = DVdd = 3.3V.FEATURES
:● High performance Σ ∆ technology
● 18-bit full duplex stereo A/D, D/A
● AC-link protocol compliance
● Operates at either 5 VDC or 3.3 VDC
● AC ’97 compliant mixer
● Energy saving power down modes
● 48k sample/second rate
● Six analog line-level inputs
● Available in 48-pin LQFP
● SNR > 95 dB through the DAC and mixer 1 09/24/98 ORDERING INFORMATION: PART NUMB...