Product
0
PCM2901
  • PCM2901

PCM2901

ACTIVE

Stereo USB1.1 CODEC with line-out, Self-powered (HID Interface)

Texas Instruments PCM2901 Product Info

1 April 2026 0

Parameters

Number of ADC channels

2

Number of DAC channels

2

Control interface

HID

Analog inputs

2

Analog outputs

2

Features

USB interface

Sampling rate (max) (kHz)

48

Rating

Catalog

Operating temperature range (°C)

0 to 70

Package

SSOP (DB)-28-79.56 mm² 10.2 x 7.8

Features

  • 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 VCCC = VCCP1 = VCCP2 = VCCX = VDD = 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 VCCC = VCCP1 = VCCP2 = VCCX = VDD = 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

(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.
All other trademarks are the property of their respective owners.

  • 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 VCCC = VCCP1 = VCCP2 = VCCX = VDD = 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 VCCC = VCCP1 = VCCP2 = VCCX = VDD = 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

(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.
All other trademarks are the property of their respective owners.

Description

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.

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.

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