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ALC262
2+2 HD Audio Codec
 
General Description

The ALC262-GR/ALC262S-GR/ALC262SRS-GR/ALC262DTS-GR are 4-Channel High Definition Audio Codecs with UAA (Universal Audio Architecture), featuring two 24-bit stereo DACs and three 20-bit stereo ADCs, they are designed for high-performance multimedia desktop and laptop systems. The ALC262 series incorporate 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 ALC262 series provide 4 DAC channels, supporting stereo sound playback on the rear panel and independent stereo sound output on the front panel simultaneously (multiple streaming), along with flexible mixing, mute, and fine gain control functions to provide a complete integrated audio solution.

The ALC262 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 sound quality for PC VoIP applications. With this unique feature (3 stereo ADCs), the ALC262 can provide high-quality audio using S/PDIF to output analog data, or for multiple-source recording applications.

All analog IOs are input and output capable and can be re-tasked according to user's definitions. Headphone amplifiers are also integrated at analog output ports A, B, C, D, E, and F.

The ALC262 series support 16/20/24/32-bit S/PDIF input and output functions for both consumer mode and professional mode, and a sampling rate of up to 192kHz, offering easy connection of PCs to high quality consumer electronic products such as AC-3 decoders/speakers, and mini disk devices.

The ALC262 series support 16/20/24 S/PDIF input and output to offer easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers.

The ALC262 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 a choice of optional Dolby® audio technology, the ALC262 series provide an excellent entertainment package and game experience for PC users.

 
Features
  • High-performance DACs with 100dB SNR
  • ADCs with 90dB SNR
  • Meets performance requirements for audio on PC2001 systems
  • Two stereo DACs support 16/20/24-bit PCM format for stereo audio playback on the rear panel, plus 2 channels of independent stereo sound output (multiple streaming) through the Front-Out-Left and Front-Out-Right channels
  • Three 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 applications
  • Supports MONO line output with independent volume control
  • High-quality analog differential CD input
  • Supports external PCBEEP input and built-in digital BEEP generator
  • Software selectable 2.5V/3.75V VREFOUT
  • Two jack detection pins and each designed to detect up to 4 jacks
  • 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 port-A/D/E/F
  • Supports both analog DC volume control and GPI digital volume control (requires driver support)
  • 4 GPIOs (General Purpose Input/Output) for customized applications
  • Optional EAPD (External Amplifier Power Down) is supported
  • Power support: Digital: 3.3V; Analog: 3.3V/5.0V
  • Power management and enhanced power saving features
  • 48-pin LQFP 'Green' package; pin compatible with the ALC260
  • 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-band Software Equalizer
  • 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 applications
  • Optional audio software technology
    • ALC262S-GR features Dolby® Sound Room
    • ALC262SRS-GR features SRS TruSurround XT
    • ALC262DTS-GR features DTS CONNECT
Applications
  • Multimedia desktop and laptop PCs
  • 3D PC games
  • Information appliances (IA)
  • Voice recognition
  • Audio conferencing
Download Page Links
Datasheets
Reference Designs

 

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