Audio controller Chip for Skype Phones and VoIP Peripherals
Winbond Electronics introduced the W681308, an integrated USB audio controller for all application segments of a Skype or other PC-based VoIP system from wired and wireless ISB handsets, to USB speaker phones, to PSTN/USB dual mode phones, to USB PSTN gateways and ISB analog Telephone Adapters (ATAs) to the wireless USB 2.4 GHz base/handset. Its 16-bit ADC/DAC with 8/16/48 kHz wide-band sampling rate is said to result in the best voice quality ina VoIP environment. The W681308 chip is USB 2.0 full speed compatible and integrates a fast 8051 MCU. It has an 8/16/48 kHz sampling rate wideband Codec with a 16-bit ADC/DAC and Acoustic Echo cancellation (AEC) and AGC to support USB speaker phone applications. The single chip also supports full-duplex echo cancellation, three-channel PCM mixer, integrated microphone amplifier and speaker driver, flexible OTP custom programming and complete reference design solutions.