TI PCM2900E

The PCM2900/2902 is a single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (only PCM2902). The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (e.g., vendor ID/product ID). The PCM2900/2902 employs SpAct architecture, a unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct architecture enable playback and record with low clock jitter and with independent playback and record sampling rates.

• PCM2900: Without S/PDIF
• PCM2902: With S/PDIF
• On-Chip USB Interface:
  • With Full-Speed Transceivers Fully Compliant With USB 1.1 Specification Certified by USB-IF
  • Partially Programmable Descriptors
  • USB Adaptive Mode for Playback
  • USB Asynchronous Mode for Record
  • Bus Powered
• 16-Bit Delta-Sigma ADC and DAC Sampling Rate:
  • 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
• Single Power Supply: 5 V Typical (V_BUS)
• Stereo ADC:
  • Analog Performance at V_BUS = 5 V
  • THD + N = 0.01%
  • SNR = 89 dB
  • Dynamic Range μ = 89 dB
  • Decimation Digital Filter:
    • Pass-Band Ripple = ±0.05 dB
    • Stop-Band Attenuation δ = 65 dB
  • Single-Ended Voltage Input:
    • Antialiasing Filter Included
    • Digital LCF Included
• Stereo DAC:
  • Analog Performance at V_BUS = 5 V
  • THD + N = 0.005%
  • SNR = 96 dB
  • Dynamic Range = 93 dB
  • Oversampling Digital Filter:
    • Pass-Band Ripple = ±0.1 dB
    • Stop-Band Attenuation = -43 dB
  • Single-Ended Voltage Output:
    • Analog LPF Included
• Multifunctions: Human Interface Device (HID) Volume ± Control and Mute Control, Suspend Flag
• Package: 28-Pin SSOP

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