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STAC9704T Datasheet

  • STAC9704T

  • Multimedia Audio Codec for AC97

  • 49頁

  • HYNIX

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SigmaTel, Inc.
Integrating Mixed-Signal Solutions
Multimedia Audio Codec for AC鈥?7
STAC9704/7
GENERAL DESCRIPTION:
SigmaTel鈥檚
STAC9704/07
is a general purpose 18-bit, full duplex, audio codec that conforms to the analog
component specification of AC鈥?7 (Audio Codec 鈥?7 Component Specification rev. 1.03). The
STAC9704/07
incorporates
SigmaTel鈥檚
proprietary Sigma-Delta technology to achieve signal quality in excess of
95dB
SNR.
The DACs, ADCs, and mixers are integrated with analog I/Os, which include four analog line-level stereo inputs,
two analog line-level mono inputs, and 3 output channels. Also included are
SigmaTel鈥檚
3D stereo enhancement
(SS3D) and an extra true line-level out for headphones or speaker amplifiers. The
STAC9704/07
communicates
via the five wire AC Link to any digital component of AC鈥?7 providing flexibility in the audio system design.
Packaged in a small AC鈥?7 compliant 48-pin TQFP, the
STAC9704/07
can be placed on the motherboard,
daughter boards, add-on cards, PCMCIA cards, or outside the main chassis such as in a speaker. The 9707 is
identical to the 9704 except that the 9707 is tested at AVdd = DVdd = 3.3V.
FEATURES:
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High performance
危 鈭?/div>
technology
18-bit full duplex stereo A/D, D/A
AC-link protocol compliance
Single power source from 5V to 3.3V
AC'97 compliant mixer
SigmaTel Surround (SS3D)
Stereo
Enhancement
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Energy saving power down modes
48k sample/second rate
Six analog line-level inputs
48-pin TQFP
SNR > 95 dB through Mixer and DAC
STAC9707 is the 3.3 volt version
1
10/02/98

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