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ADVANCE DATA SHEET
SigmaTel, Inc.
Integrating Mixed-Signal Solutions
STAC9744
Stereo AC'97 Codec With Multi-Codec Option and On-Chip SRCs
GENERAL DESCRIPTION:
SigmaTel’s STAC9744 is a general-purpose 18-bit stereo, full duplex, audio codec that conforms to the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1). The STAC9744 incorporates SigmaTel’s proprietary Sigma-Delta technology to achieve a DAC SNR in excess of 95dB and line through SNR of greater than 100dB. The DACs, ADCs, and mixer are integrated with analog I/Os, which include four analog line-level stereo inputs, two analog line-level mono inputs, two stereo outputs, and one mono output channel.