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STAC9752 Datasheet

  • STAC9752

  • TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE,...

  • 95頁

  • IDT

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DATASHEET
TWO-CHANNEL, 20-BIT, AC鈥?7 2.3 CODECS WITH HEADPHONE
DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
Description
IDT's STAC9752/9753 are general purpose 20-bit, full
duplex, audio CODECs conforming to the analog
component specification of AC'97 (Audio CODEC 97
Component Specification Rev. 2.3). The STAC9752/9753
incorporate IDT's proprietary
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technology to achieve a
DAC SNR in excess of 90dB. 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鈥檚 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 communicate via the five AC-Link
lines to any digital component of AC'97, providing flexibility
in the audio system design. Packaged in an AC'97
compliant 48-pin TQFP, the STAC9752/9753 can be placed
on the motherboard, daughter boards, PCI, AMR, CNR,
MDC or ACR cards.
STAC9752/9753
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5-wire AC-Link protocol compliance
20-bit SPDIF Output
Internal Jack Sensing on Headphone and Line_Out
Internal Microphone Input Sensing
Digital PC Beep Option
Extended AC鈥?7 2.3 Paging Registers
Adjustable VREF amplifier
Digital-ready status
General purpose I/Os
Crystal Elimination Circuit
Headphone drive capability (50 mW)
0dB, 10dB, 20dB, and 30dB microphone boost
capability
+3.3 V (STAC9753) and +5 V (STAC9752) analog
power supply options
Pin compatible with the STAC9700, STAC9721,
STAC9756
100% pin compatible with STAC9750 and
STAC9766
IDT Surround (SS3D) Stereo Enhancement
Energy saving dynamic power modes
Multi-CODEC option (Intel AC'97 rev 2.3)
Six analog line-level inputs
90dB SNR Line to Line
SNR > 89dB through Mixer and DAC
Features
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High performance
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technology
AC鈥?7 Rev 2.3 compliant
20-bit full duplex stereo ADCs, DACs
Independent sample rates for ADCs & DACs
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1
STAC9752/9753
V 3.3 101006
TWO-CHANNEL, 20-BIT, AC鈥?7 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

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