Audio Codec 1ADC / 1DAC 16-Bit 28-Pin SSOP Tube

The PCM2901/2903 is TI’s single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (only PCM2903). The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (for example, vendor ID/product ID). The PCM2901/2903 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 and with independent playback and record sampling rates.

PCM2901: Without S/PDIF

PCM2903: 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⁽¹⁾
• 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

Single Power Supply: 3.3 V Typical

Stereo ADC

• Analog Performance at V_CCC = V_CCP1 = V_CCP2 = V_CCX = V_DD = 3.3 V
  • THD+N = 0.01%
  • SNR = 89 dB
  • Dynamic Range = 89 dB
• Decimation Digital Filter
  • Pass-Band Ripple = ±0.05 dB
  • Stop-Band Attenuation = –65 dB
• Single-Ended Voltage Input
• Antialiasing Filter Included
• Digital LCF Included

Stereo DAC

• Analog Performance at V_CCC = V_CCP1 = V_CCP2 = V_CCX = V_DD = 3.3 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

APPLICATIONS

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