USB Audio Controller

Nuvoton USB Audio Controller provides a complete USB VoIP and Audio solution, integrating a fast 8051 MCU, a USB2.0 Full Speed compliant controller with PHY and a 16bit ADC/DAC with 8KHz – 48KHz sampling rate in a single chip package.

Full function integration shortens design time, providing a single-chip, one-stop solution for a spectrum of USB audio and VoIP applications including USB headset, USB microphone, USB phone, USB speaker phones and USB Analog Telephone Adapters (ATAs). Nuvoton’s higher-integration part can replace 3 to 4 devices and offers the lowest BOM costs for PC-based Audio and VoIP applications. Its 16-bit ADC/DAC with 8/16/48-kHz wide-band sampling rate results in the best voice quality in a PC environment.

W681308 is USB2.0 full speed compatible and integrates a fast 8051 MCU that enables feature rich applications. The part also has a 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. This single-chip solution also supports full-duplex echo cancellation, 3-channel PCM mixer, integrated microphone amplifier and speaker driver, flexible OTP custom programming and complete reference design solutions. The high integration of the W681308 enables lower cost and smaller board space design.

Reference designs are available for building USB Gateway and USB ATA solutions with Nuvoton’s Voice CODEC or Pro-X ICs.

A complete Software Development Kit (SDK) for 8051-based Keil C development system is available.

	All packages available in Pb-free

All USB Audio Controller parts are now available in RoHS packaging options; to specify RoHS when ordering, add "G" to the part numbers listed in the Product Selection Guide