AD1881A中文资料AC’97 SoundMAX® Codec数据手册ADI规格书

描述 Description

The AD1881A meets the Audio Codec ’97 2.0 and 2.1 Extensions. Inaddition, the AD1881A SoundMAX Codec is designed to meet allrequirements of the Audio Codec ’97, Component Specification, Revision1.03, © 1996, Intel Corporation, found on Intel's web site.The AD1881A also includes some other Codec enhanced featuressuch as the built-in PHAT Stereo 3D enhancement.The AD1881A is an analog front end for high performance PCaudio applications. The AC’97 architecture defines a 2-chipaudio solution comprising a digital audio controller, plus a highquality analog component that includes Digital-to-AnalogConverters (DACs), Analog-to-Digital Converters (ADCs),mixer and I/O.The main architectural features of the AD1881A are the highquality analog mixer section, two channels of ΣΔ ADC conversion,two channels of ΣΔ DAC conversion with Data Direct Scram-bling(D2S) rate generators. The AD1881A’s left channel ADCand DAC are compatible for modem applications supporting irra-tionalsample rates and modem filtering requirements.
• Four Analog Line-Level Stereo Inputs for Connection from LINE,CD,VIDEO,and AUX

• Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP

• Mono MIC Input Switchable from Two External Sources

• High Quality CD Input with Ground Sense

• Stereo Line-Level Output

• Mono Output for Speakerphone or Internal Speaker

• Power Management Support

特性 Features

• Mobile Low Power Mixer Mode
• Digital Audio Mixer Mode
• Full Duplex Variable 8 kHz to 48 kHz Sampling Ratewith 1 Hz Resolution
• PHAT™ Stereo 3D Stereo Enhancement
• Split Power Supplies (3.3 V Digital/5 V Analog)
• Extended 6-Bit Master Volume Control
• Audio Amp Power-Down Signal