The AD74322 is a front-end processor for general purpose audio and voice applications. It features two multi-bit A/D conversion channels and two multi-bit D/A conversion channels. Each ADC channel provides >85 dB signal-to-noise ratio while each DAC channel provides >90 dB, both over an audio signal bandwidth. The AD74322 is particularly suitable for a variety of applications where stereo input and output channels are required, including audio sections of Digital Video Camcorder, portable personal audio devices and the analog front ends of conference phones . Its high quality performance also make it suitable for speech and telephony applications such as speech recognition and synthesis and modern feature phones.