STAC9752 Datasheet | IDT

scription IDT's STAC9752/9753 are general purpose 20-bit, full duplex, audio CODECs conforming to the analog ponent specification of AC'97 (Audio CODEC 97 ponent Specification Rev. 2.3). The STAC9752/9753 incorporate IDT's proprietary Σ∆ technology to achieve a DAC SNR in excess of 90d B. 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 STAC9752/9753 include digital output capability for support of modern PC systems with an output that supports the SPDIF format. The STAC9752/9753 are standard 2-channel stereo CODECs. With IDT’s headphone capability, headphones can be driven without an external amplifier. The STAC9752/9753 may be used as a secondary or tertiary CODECs, with STAC9700/21/44/56/ 08/84/50/66 as the primary, in a multiple CODEC configuration conforming to the AC'97 Rev. 2.3 specification. This configuration can provide the true six-channel, AC-3 playback required for DVD applications. The STAC9752/9753 municate via the five AC-Link lines to any digital ponent of AC'97, providing flexibility in the audio system design. Packaged in an AC'97 pliant 48-pin TQFP, the STAC9752/9753 can be placed on the motherboard, daughter boards, PCI, AMR, CNR, MDC or ACR cards. STAC9752/9753 - - - - - - - - - - - - - - - - - - - - - 5-wire AC-Link protocol pliance 20-bit SPDIF Output Internal Jack Sensing on Headphone and Line_Out Internal Microphone Input Sensing Digital PC Beep Option Extended AC’97 2.3 Paging Registers Adjustable VREF amplifier Digital-ready status General purpose I/Os Crystal Elimination Circuit Headphone drive capability (50 m W) 0d B, 10d B, 20d B, and 30d B microphone boost capability +3.3 V (STAC9753) and +5 V (STAC9752) analog power supply options Pin patible with the STAC9700, STAC9721, STAC9756 100% pin patible with STAC9750 and STAC9766 IDT Surround (SS3D) Stereo Enhancement Energy saving dynamic power...