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STAC9767XXTAEYYX Folha de dados(PDF) 1 Page - Integrated Device Technology |
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1 / 97 page DATASHEET TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING STAC9766/9767 IDT™ 1 STAC9766/9767 V 7.4 12/06 TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING FEATURES • This datasheet is for Rev. CC1 Parts and Beyond • High Performance Σ∆ Technology • AC’97 Rev 2.3 Complaint • 20-bit Full Duplex Stereo ADC & DACs • Independent Sample Rates for ADC & DACs • 5-Wire AC-Link Protocol Compliance • 20-bit SPDIF Output • Full Stereo Microphone Pre-Amp • Internal Jack Sensing on Headphone & Line_Out • Internal Microphone Input Sensing • Digital PC Beep Option • Extended AC’97 2.3 Paging Registers • Digital-ready Status • General Purpose I/O • Crystal Elimination Circuit • Headphone Drive Capability (50 mW) • 0dB, 10dB, 20dB and 30dB Microphone Boost Capability • +3.3 V (STAC9767) and +5 V (STAC9766) Analog Power Supply Options • Pin Compatible with STAC9700/21/56 • 100% Compatible with STAC9750/52 • IDT Surround (SS3D) Stereo Enhancement • Energy Saving Dynamic Power Modes • Multi-CODEC Option (Intel AC'97 rev 2.3) • Six Analog Line-level Inputs • 103dB SNR LINE-LINE KEY SPECIFICATIONS • Analog LINE_OUT SNR: 103 dB • Digital DAC SNR: 95 dB • Digital ADC SNR: 85 dB • Full-scale Total Harmonic Distortion: 0.002% • Crosstalk Between Input Channels: -70 dB • Spurious Tone Rejection: 100 dB RELATED MATERIALS • Data Sheet • Reference Designs DESCRIPTION IDT's STAC9766/9767 (Revision CC1 and beyond) are general purpose 20-bit, full duplex, audio CODECs con- forming to the analog component specification of AC'97 (Audio CODEC 97 Component Specification Rev. 2.3). The STAC9766/9767 incorporates IDT's proprietary Σ∆ technology The AC’97 CODEC is designed to achieve a DAC SNR in excess of 103dB. 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 STAC9766/9767 includes digital input/output capability for support of modern PC systems with an output that supports the SPDIF format. The STAC9766/9767 is a standard 2-channel stereo CODEC. With IDT’s headphone drive capability, head- phones can be driven with without an external amplifier. The STAC9766/9767 may be used as a secondary CODEC, with the STAC9700/21/56/08/84/50/52 as the pri- mary, in a multiple CODEC configuration conforming to the AC'97 Rev. 2.3 specification. This configuration can pro- vide the true six-channel, AC-3 playback required for DVD applications. The STAC9766/9767 communicates via the five-wire AC-Link to any digital component of AC'97, providing flexi- bility in the audio system design. Packaged in an AC'97 compliant 48-pin TQFP, the STAC9766/9767 can be placed on a motherboard, daugh- ter boards, PCI, AMR, CNR, MDC or ACR cards. The STAC9766/9767 provides variable sample rate Digi- tal-to-Analog (DA) and Analog-to-Digital (AD) conversion, mixing and analog processing. Supported audio sample rates include 48KHz, 44.1KHz, 32KHz, 22.05KHz, 16KHz, 11.025KHz, and 8 KHz; addi- tional rates are supported in the STAC9766/9767 soft audio drivers. All ADCs and DACs operate at 20-bit resolu- tion. The STAC9766/9767 includes full Stereo Microphone |
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