TI PCM2903BDBR

The PCM2903B is a single-chip, USB, stereo audio codec with a USB-compliant fullspeed protocol controller and S/PDIF. The USB protocol controller requires no software code, but the USB descriptors can be modified in some areas (for example, vendor ID and/or product ID). The PCM2903B employs SpAct™ architecture, a unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter as well as independent playback and record sampling rates.

• On-Chip USB Interface:
  • With Full-Speed Transceivers – Fully Compliant with USB 2.0 Specification – Certified by USB-IF
  • Partially Programmable Descriptors
  • USB Adaptive Mode for Playback – USB Asynchronous Mode for Record
  • Self-Powered
  • 16-Bit Delta-Sigma ADC and DAC
  • Sampling Rates:
    • DAC: 32, 44.1, 48 kHz
    • ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
  • On-Chip Clock Generator With Single 12-MHz Clock Source
  • S/PDIF Input/Output
  • Single Power Supply: 3.3 V Typical
  • Stereo ADC:
    • Analog Performance at VCCC = VCCP1 = VCCP2 = VCCX = VDD = 3.3 V:
      • THD + N = 0.01%
      • SNR = 89 dB
      • Dynamic Range μ = 89 dB
    • Decimation Digital Filter:
      • Passband Ripple = ±0.05 dB
      • Stop-Band Attenuation δ = -65 dB
    • Single-Ended Voltage Input
    • Antialiasing Filter Included
    • Digital HPF Included
• Stereo DAC:
  • Analog Performance at VCCC = VCCP1 = VCCP2 = VCCX = VDD = 3.3 V:
    • THD + N = 0.005%
    • SNR = 96 dB
    • Dynamic Range = 93 dB
• Multifunctions:
  • Human Interface Device (HID) Function:
    • Volume and Mute Controls
  • Suspend Flag Function
• 28-Pin SSOP Package

• USB Audio Speaker
• USB Headset
• USB Monitor
• USB Audio Interface Box