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STAC9721 - Stereo AC 97 Codec

General Description

SigmaTel’s STAC9721/23 is a general-purpose 18-bit stereo, full duplex, audio codec that conforms to the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev.

2.1).

Key Features

  • High performance Σ∆ technology.
  • Energy saving power down modes.
  • 18-bit full duplex stereo ADC, DACs.
  • AC-Link protocol compliance.
  • 3.3V Multiple power supply options.
  • Pin compatible with the STAC9700/44/45.
  • SigmaTel Surround (SS3D) Stereo Enhancement.
  • EAPD.
  • External Amplifier Power Down Control.
  • Multi-Codec option (Intel AC'97 rev 2.1).
  • Six analog line-level inputs.
  • 48-pin TQFP.

📥 Download Datasheet

Datasheet Details

Part number STAC9721
Manufacturer SigmaTel
File Size 423.11 KB
Description Stereo AC 97 Codec
Datasheet download datasheet STAC9721 Datasheet

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STAC9723 Stereo AC 97 Codec
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com SigmaTel, Inc. Integrating Mixed-Signal Solutions DATA SHEET STAC9721/23 Stereo AC'97 Codec With Multi-Codec Option GENERAL DESCRIPTION: SigmaTel’s STAC9721/23 is a general-purpose 18-bit stereo, full duplex, audio codec that conforms to the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1). The STAC9721/23 incorporates SigmaTel’s proprietary Sigma-Delta technology to achieve a DAC SNR in excess of 95dB. 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. Also included are SigmaTel’s 3D stereo enhancement (SS3D), and an extra true line-level out for headphones or speaker amplifiers.