5.1 Channel High Definition Audio Codec

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The ALC662 is a 5.1 Channel High Definition Audio Codec designed for Windows Vista desktop and mobile PCs. Its performance and functionality meet Microsoft Windows Vista (WLP 3.08) premium requirements. The ALC662 features three stereo DACs, two stereo ADCs, and legacy analog input to analog output mixing, to provide a fully-integrated audio solution for multimedia PC systems.

All analog IO (except CD-IN and PCBEEP) are input and output capable, and three headphone amplifiers are also integrated to drive earphones on front (port-E and port-F) and rear panel (port-D).

The ALC662 supports 16/20/24-bit S/PDIF output function and a sampling rate of up to 96kHz. It offers easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers.

The ALC662 supports host/soft audio from the Intel ICH series 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, DTS® CONNECT™, and Dolby® Home Theater programs, the ALC662 provides an excellent home entertainment package and game experience for PC users.


• Desktop and mobile multimedia PCs
• Information Appliances (IA)

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized Realtek distributor.


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Meets performance requirements for Microsoft WLP 3.08 Vista premium and mobile PCs
Six channel DAC supports 16/20/24-bit PCM format for 5.1 channel audio solution
Two stereo ADC support 16/20-bit PCM format
All DAC support independent 44.1k/48k/96kHz sample rate
All ADC support independent 44.1k/48k/96kHz sample rate
Supports 44.1k/48k/96kHz S/PDIF output
All analog jack port are stereo input and output re-tasking
Analog differential CD input
Supports analog PCBEEP input
Integrates digital BEEP generator
Up to four channels of microphone array input are supported for AEC/BF application
Supports legacy analog input to analog output mixer
Built-in three headphone amplifiers for port-D (rear panel), port-E and port-F (front panel)
Software selectable 2.5V and 3.2V reference output for microphone bias
Software selectable boost gain (+10/+20/+30dB) for analog microphone input
Two jack detection pins: each supports detection of up to 4 jacks
Jack detection function is supported when device is in power down mode (D3)
Supports two GPIO pins (general purpose input and output)
Supports EAPD (external amplifier power down) control for external amplifier
Support 1.5V~3.3V scalable I/O for HD Audio link
Supports anti-pop mode when analog power AVDD is on and digital power is off
48-pin LQFP Green package
Pin-to-pin compatible with ALC88x series, ALC660 series, and ALC26x series audio codecs

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