VT1612A

VIA Technologies Incorporated Features AC’97 2.2 compliant codec 18-bit stereo full-duplex Σ∆ codec 1Hz resolution VSR (Variable Sampling Rate) Integrated IEC958 line driver for S/PDIF output S/PDIF compressed digital or LPCM audio out 3D stereo expansion for simulated surround 18-bit independent rate stereo ADC/DAC Hardware VU peak meters for PCM streams 4 stereo, 2 mono analog line-level inputs Alt. line-level output with volume control, or Headphone Amplifier with Thermal Protection Low Power consumption mode Exceeds Microsoft® WHQL logo requirements 3.3V digital, 3.3 or 5V analog power supply 48-pin LQFP small footprint package VT1612A Stereo AC‘97 Codec with S/PDIF Description VIA Technologies’ VT1612ATM 18-bit ¦∆ audio codec conforms to the AC’97 2.2 and S/PDIF specifications. The VT1612A integrates Sample Rate Converters and can be adjusted in 1 Hz increments. The analog mixer circuitry integrates a stereo enhancement to provide a pleasing 3D surround sound effect for stereo media. Furthermore, an integrated headphone amplifier with thermal shutdown adds signal value by reducing the BOM. This codec is designed with aggressive power management to achieve low power consumption. When used with a 3.3V analog supply, power consumption is further reduced. The primary applications for this part are desktop and portable personal computers multimedia subsystems. However, it is suitable for any audio subsystem requiring stereo audio input / output...