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ALC882
7.1+2 HD Audio Codec
 
General Description

The ALC882 series 7.1+2 Channel High Definition Audio codecs with UAA (Universal Audio Architecture), featuring five 24-bit stereo DACs and three 20-bit stereo ADCs, are designed for high performance multimedia PC systems. The ALC882 series incorporates proprietary converter technology to achieve over 100dB Signal-to-Noise ratio playback quality; easily meeting PC2001 requirements and also bringing PC sound quality closer to consumer electronic devices.

The ALC882 series provide 10 channels of DAC that simultaneously support 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the Front-Out-Left and Front-Out-Right channels. Flexible mixing, mute, and fine gain control functions provide a complete integrated audio solution for next generation multimedia PCs.

The DACs (with a highest sampling frequency of 192kHz) and Realtek proprietary hardware content protection are applicable for DVD-Audio, previously only implemented in high-end consumer electronics, and now achieved by PCs with the ALC882 series inside. The ALC882 series also integrate three stereo ADCs that can support a microphone array with Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology simultaneously, significantly improving recording quality for conference calls. With this feature (3 stereo ADCs), the ALC882 series can provide high-quality audio using S/PDIF to output analog data, or for multiple-source recording applications. All analog IO are input and output capable, and headphone amplifiers are also integrated at each analog output. All analog IOs can be re-tasked according to user's definitions, or automatically switched depending on the connected device type.

The ALC882 series support 16/20/24/32-bit S/PDIF input and output functions for both consumer mode and professional mode, offering easy connection of PCs to high quality consumer electronic products such as AC-3 decoders/speakers, and mini disk devices. The ALC882 series supports host/soft audio from the Intel ICH6/ICH7 chipset, and also from any other HDA compatible audio controller. With EAX/Direct Sound 3D/I3DL2/A3D compatibility, and excellent software utilities like Karaoke mode, environment emulation, software equalizer, HRTF 3D positional audio, and optional Dolby® Digital Live and Master Studio program, the ALC882 series provides an excellent entertainment package and game experience for PC users.

 
Features
  • High-performance DACs with 103dB SNR are ideal for Dolby® Master Studio
  • ADCs with 90dBA SNR
  • Meets performance requirements for audio on PC2001 systems
  • 10 DAC channels support 16/20/24-bit PCM format for 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the Front-Out-Left and Front-Out-Right channels
  • 3 stereo ADCs support 16/20-bit PCM format, two for microphone array, one for legacy mixer recording
  • All DACs support 44.1k/48k/96k/192kHz sample rate
  • All ADCs support 44.1k/48k/96kHz sample rate
  • Applicable for DVD-Audio solutions
  • 16/20/24-bit S/PDIF-OUT supports 44.1k/48k/96k/192kHz sample rate
  • 16/20/24-bit S/PDIF-IN supports 44.1k/48k/96k/192kHz sample rate
  • Up to four channels of microphone input are supported for AEC/BF application
  • High-quality analog differential CD input
  • Supports external PCBEEP input and built-in digital BEEP generator
  • Software selectable 2.5V/3.75V VREFOUT
  • Six VREFOUTs are supported by default, with additional four VREFOUTs available by sharing unused analog I/O pins
  • Two jack detection pins each designed to detect up to 4 jacks
  • Reserve analog mixer architecture for backward compatibility with AC'97
  • Wide range (–80dB ~ +42dB) volume control with 1.5dB resolution of analog to analog mixer gain
  • All analog jacks are stereo input and output re-tasking for analog plug & play
  • Built-in headphone amplifiers for each re-tasking jack
  • Supports both analog DC volume control and GPI digital volume control
  • 2 GPIOs (General Purpose Input/Output) for customized applications
  • Optional EAPD (External Amplifier Power Down) is supported
  • Power support: Digital: 3.3V; Analog: 5.0V (Minimum AVDD is 3.6V)
  • Power management and enhanced power saving features
  • 48-pin LQFP lead (Pb)-free package
  • Meets Microsoft WHQL/WLP 2.0 audio requirements
  • EAX™ 1.0 & 2.0 compatible
  • Direct Sound 3D™ compatible
  • A3D™ compatible
  • I3DL2 compatible
  • HRTF 3D Positional Audio
  • Emulation of 26 sound environments to enhance gaming experience
  • 10 Software Equalizer Bands
  • Voice Cancellation and Key Shifting in Karaoke mode
  • Realtek Media Player
  • Enhanced Configuration Panel and device sensing wizard to improve user experience
  • Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS) and Beam Forming (BF) technology for voice application
  • ALC882D features Dolby® Digital Live output for consumer equipment
  • ALC882H features Dolby® Home Theater software
  • ALC882M features Dolby® Master Studio software
Applications
  • Multimedia PCs
  • 3D PC games
  • Information appliances (IA)
  • Voice recognition
  • Audio conferencing
Download Page Links
Datasheets
Reference Designs

 

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