Stereo USB1.1 CODEC with line-out, Bus-powered (HID Interface + 500mA USB Current) - PCM2904

PCM2904 (ACTIVE)

Stereo USB1.1 CODEC with line-out, Bus-powered (HID Interface + 500mA USB Current)

Description

The PCM2904/2906 is Texas Instruments single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (PCM2906 only). 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 PCM2904/2906 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.

Features

  • PCM2904: Without S/PDIF
  • PCM2906: 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
    • 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
      • 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 VBUS = 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
  • 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.

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Parametrics Compare all products in USB CODEC

 
# DACs / # ADCs
# Inputs / # Outputs
Resolution (Bits)
Approx. Price (US$)
Control Interface
Supply Voltage(s) (V)
Additional Features
Operating Temperature Range (C)
Pin/Package
PCM2904 PCM2901 PCM2912A
2 / 2     2 / 2     2 / 1    
2 / 2     2 / 2     1 / 2    
16     16     16    
4.90 | 1ku     4.99 | 1ku     4.70 | 1ku    
HID     HID     H/W    
5     3.3     5    
500mA Max Power Configuration       USB Interface
Mic Bias
PGAs
Sidetone    
-25 to 85     0 to 70     -25 to 85    
28SSOP     28SSOP     32TQFP    

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