STAC9701 Datasheet | SigmaTel

DESCRIPTION: Sigma Tel’s STAC9701/3 are general purpose 18-bit, full duplex, audio codecs that conform to the analog ponent specification of AC 97 (Audio Codec 97 ponent Specification rev. 1.03). The STAC9701/3 incorporates Sigma Tel’s proprietary Sigma-Delta technology to achieve signal quality in excess of 95d B 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. The STAC9701/3 municates via the five wire AC Link to any digital ponent of AC 97 providing flexibility in the audio system design. Packaged in a small AC 97 pliant 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 pliance - Operates at either 5 VDC or 3.3 VDC - AC ’97 pliant mixer - Energy saving power down modes - 48k sample/second rate - Six analog line-level inputs - Available in 48-pin LQFP - SNR > 95 d B through the DAC and mixer 09/24/98 ORDERING INFORMATION: PART NUMBER STAC9701T STAC9701Q STAC9703T PACKAGE 48-pin LQFP 7mmx 7mm x 1.4mm 64-pin LQFP 10mm x 10mm 1.4mm 48-pin LQFP 7mm x 7mm x 1.4mm TEMPERATURE RANGE 0o C to +70o C 0o C to +70o C 0o C to +70o C SUPPLY RANGE DVdd = 3.3V - 5V, AVdd = 5V DVdd = 3.3V - 5V, AVdd = 5V DVdd = 3.3V AVdd = 3.3V 09/24/98 Sigma Tel, Inc Preliminary...