PCM2900B is not recommended for new designs.
This product continues to be in production to support existing customers. Please consider one of these alternatives:
Exact equivalent in functionality and parametrics to the compared device:
PCM2900C ACTIVE Stereo USB1.1 CODEC with line-out (HID Interface) This product has on-chip analog PLLs with SpAct architecture enable playback and record with low clock jitter as well as independent playback and record sampling rates.

Product details


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  • PCM2900B: Without S/PDIF
  • PCM2902B: With S/PDIF
  • On-Chip USB Interface:
    • With Full-Speed Transceivers
    • Fully Compliant with USB 2.0 Specification
    • Certified by USB-IF
    • Partially Programmable Descriptors(1)
    • 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 (VBUS)
  • Stereo ADC:
    • Analog Performance at VBUS = 5 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 VBUS = 5 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

(1)The descriptor can be modified by changing a mask.

SpAct is a trademark of Texas Instruments.
System Two, Audio Precision are trademarks of Audio Precision, Inc.

open-in-new Find other Audio USB converters


The PCM2900B/2902B is Texas Instruments' single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF (PCM2902B only). 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 PCM2900B/2902B employs SpAct architecture, TI's 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 as well as independent playback and record sampling rates.

open-in-new Find other Audio USB converters

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet Stereo Audio Codec with USB Interface, Single Ended Analog In/Out and S/PDIF datasheet Dec. 17, 2008
* Errata Updated Operating Environments for PCM270x, PCM290x Applications Oct. 19, 2007
Application notes Key Differences Between the PCM290x and PCM290xC Sep. 14, 2011
Application notes Solving Enumeration Errors in USB Audio DAC and CODEC Designs Oct. 30, 2009
More literature PCM2900B Read-Me-First Letter: PCM2900B and PCM2900 Difference Jan. 24, 2009
Application notes Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

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