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ALC880 Series
HD Audio Codec
General Description

The ALC880 and ALC880D 7.1 Channel High Definition Audio codecs with UAA (Universal Audio Architecture), featuring four 24-bit two-channel DACs and three stereo 20-bit ADCs, are designed for high performance multimedia PC systems. The ALC880(D) incorporates proprietary converter technology to achieve 100dB sound quality; easily meeting PC2001 requirements and also bringing PC sound quality closer to consumer electronic devices.

The ALC880(D) provides 7.1 output channels, along with flexible mixing, mute, and fine gain control functions to provide a complete integrated audio solution for 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, but now achieved by PCs with the ALC880(D) inside. The ALC880(D) is also the only High Definition Audio codec to 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 unique feature (3 stereo ADCs), the ALC880(D) can provide high-quality audio using S/PDIF to output analog data, or for multiple-source recording applications.

Realtek's proprietary impedance sensing and jack detect techniques allow device loads on inputs and outputs to be auto-detected. 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 (Universal Audio Jack®).

The ALC880(D) supports 32-bit S/PDIF input and output functions and a sampling rate of up to 96kHz, offering easy connection of PCs to high quality consumer electronic products such as AC-3 decoders/speakers, and mini disk devices.

The ALC880(D) supports host/soft audio from the Intel ICH6 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, the ALC880(D) provides an excellent entertainment package and game experience for PC users.

  • High-performance DACs with 100dB S/N ratio
  • ADCs with S/N ratio greater than 85dB
  • Meets performance requirements for audio on PC2001 systems
  • 8 DAC channels support 16/20/24-bit PCM format for 7.1 audio solution
  • 3 stereo ADCs support 16/20-bit PCM format, two for microphone array, one for legacy mixer recording
  • Supports 44.1K/48K/96K/192kHz DAC sample rate
  • All ADCs support 44.1K/48K/96K sample rate
  • Applicable for 4-channel/192kHz and 6-channel/96kHz DVD-Audio solutions
  • Up to four channels of microphone input are supported for AEC/BF application
  • High-quality differential CD input
  • Supports Power Off CD function
  • Supports external PCBEEP input and built-in BEEP generator
  • PCBEEP Pass-Through when link is in RESET state
  • 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 GPI (General Purpose Input) jack detection pins (each designed to detect 4 jacks)
  • 16/20/24-bit S/PDIF-OUT supports 44.1K/48K/96kHz sample rate
  • 16/20/24-bit S/PDIF-IN supports 44.1K/48K/96kHz sample rate
  • Optional EAPD (External Amplifier Power Down) supported
  • Power support: Digital: 3.3V; Analog: 3.3V/5.0V
  • Power management and enhanced power saving features
  • Compatible with AC'97
  • 48-pin LQFP package (lead-free package also available)
  • Reserve analog mixer architecture for backward compatibility with AC'97
  • -64dB ~ +30dB with 1dB resolution of mixer gain to achieve finer volume control
  • Impedance sensing capability for each re-tasking jack
  • All analog jacks are stereo input and output re-tasking for analog plug & play
  • Built-in headphone amplifier for each re-tasking jack
  • Supports external volume knob control
  • Supports 2 GPIOs (General Purpose Input/Output) for customized applications
  • Hardware de-scrambling for DVD-Audio Content protection
  • 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) and Beam Forming (BF) technology for voice application
  • Mono/Stereo Microphone noise suppression
  • ALC880D features Dolby® Digital Live output for consumer equipment
  • Multimedia PCs
  • 3D PC games
  • Information appliances (IA)
  • Voice recognition
  • Audio conferencing
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Reference Designs


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