The VT1630A VinylUSB USB2.0 FS Audio Codec is a Universal Serial Bus Audio Codec for quality USB audio consumer applications. It conforms to the USB 2.0 Specification and supports Full-Speed mode. VT1630A supports USB Audio Class 1.0, and hence can enable driverless product. Featuring with SPI, I2C, MIDI, and S/PDIF interfaces, VT1630A’s stereo I/O supports most popular digital audio sampling resolutions. VT1630A requires only one 12-MHz crystal oscillators to generate all necessary clock frequencies for internal clock operation. VT1630A also integrates the 5V-to-3.3V and 3.3V-to-1.8V regulator; together with 18-k built-in ROM, it provides customer with extremely cost-competitive BOM solution.

VT1630A can support cap-less headphone amplifier that eliminates the need for the external capacitors, and saves the board space and cost. The programmable High-Pass Filter works for low frequency noise suppression. The powerful DSP (Digital Signal Processing) features on-chip empowers 3-D like audio sensations. The parametric EQ with fully programmable coefficients is integrated to optimize audio output characteristics. The digital signal processing technology in VT1630A allows it to deliver better sound quality and enriched audio features without extra driver/software efforts and installation. The 24-bit high signal-to-noise-ratio audio codec is designed to convert digital signal to enhanced analog sound with maximum clarity for the USB audio applications, such as speakers, headset speakers, headphone, speakerphone or IP phone for PC or home stereo, and etc.

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
    • 1 S/PDIF RX audio interface
      • Mono/2-Ch
      • 16/20/24-bit
      • Supports 44.1/48/88.2/96kHz sample rates
  • Powerful Digital Mixing / DSP (Digital Signal Processing)
    • 3D surround sound effect
    • 5-band programmable EQ (Equalizer) for both DAC and ADC
    • Independent Dynamic Range. Compression for both DAC and ADC Noise Gate
    • Digital side tone mixing
    • HP (High Pass) filter for low frequency noise suppression

VT1630A Block Diagram


VIA Technologies, Inc.