• On-Chip USB Interface:
  • With Full-Speed Transceivers
  • Fully Compliant With USB 2.0 Specification
  • Certified by USB-IF
  • 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 = 89 dB
  • Decimation Digital Filter:
    • Passband Ripple = ±0.05 dB
    • Stop-Band Attenuation = –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
  • Oversampling Digital Filter:
    • Passband Ripple = ±0.1 dB
    • Stop-Band Attenuation = –43 dB
  • Single-Ended Voltage Output
  • Analog LPF Included
• 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

The PCM2903C is TI's single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller requires no software code. The PCM2903C employs SpAct™ architecture, TI's 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.