STAC9751

www.DataSheet4U.com DATASHEET VALUE-LINE TWO-CHANNEL AC’97 CODECS OVERVIEW Value-Line Stereo AC'97 CODECs with headphone drive and SPDIF outputs. STAC9750/9751 DESCRIPTION IDT's STAC9750/9751 are general purpose, full duplex, audio CODECs conforming to the analog component specification of AC'97 (Audio CODEC 97 Component Specification Rev. 2.2). They have 18-bit ADCs and 20-bit DACs. The STAC9750/9751 incorporate IDT's proprietary Σ∆ technology to achieve a DAC SNR in excess of 89dB. 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. The STAC9750/9751 include digital input/output capability for support of modern PC systems and also an output that supports the SPDIF format. The STAC9750/9751 is a standard 2-channel stereo CODEC. With IDT’s headphone drive capability, headphones can be driven with no external amplifier. The STAC9750/9751 may be used as a secondary CODEC, with the STAC9700/21/44/56/08/84/66 as the primary, in a multiple CODEC configuration conforming to the AC'97 Rev. 2.2 specification. This configuration can provide the true six-channel, AC-3 playback required for DVD applications. The STAC9750/9751 communicates via the five-wire AC-Link to any digital component of AC'97, providing flexibility in the audio system design. The STAC9750/9751 supports General Purpose Input/Output (GPIO), as well as SPDIF output. These d...