The VIA Envy VT1620A is a low power optimized, 2-channel USB audio codec specifically designed to deliver a rich immersive listening experience for audio enthusiasts. Supporting stereo 24-bit resolution and up to 192 kHz sample rate, the VT1620A features 2 stereo DACs which can achieve high performance 95 db Signal-to-Noise Ratio (SNR) and 2 stereo ADCs which can achieve  high performance 90 db SNR.

The highly integrated single chip USB audio solution is embedded with a number of crucial modules, including a standard 8032 MCU core, an I2C interface supporting master and slave mode, a serial flash controller and, built-in 5V~ 3.3-V and 5-V to 2-V regulator.

Feature Highlights

  • USB Interface
    • USB 2.0 Full-Speed (12 Mbps) Device Compliant
    • USB 2.0 High-Speed PHY Integrated
    • USB Audio Class v1.0 Device Compliant
    • USB Device Firmware Upgrade v1.1 Compliant
  • Embedded Audio Codec
    • 2-channel ADC with 90dB SNR, 16/24-bit supporting 44.1/48/96/192kHz sample rates
    • 2-channel DAC with 95dB SNR, 16/24-bit supporting 44.1/48/96/192kHz sample rates
    • Left/right channel exchange for both ADC and DAC
  • S/PDIF Interface
    • 1 S/PDIF TX audio interface
      • Mono/2-Ch
      • 16/20/24-bit
      • Supports 44.1/48/88.2/96/176.4/192kHz sample rates

VT1630A Block Diagram


VIA Technologies Japan株式会社