PCM2912A Audio CODEC with USB Interface, Mono Microphone Input and Stereo Headphone Output | TI.com

PCM2912A
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Audio CODEC with USB Interface, Mono Microphone Input and Stereo Headphone Output

 

Description

The PCM2912A is the Texas Instruments single-chip, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an analog front-end (AFE) function for headset applications.

The USB protocol controller works with no software code, but USB descriptors can be modified on request. The PCM2912A employs SpAct™ architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters.

Features

  • On-Chip USB Interface:
    • With Full-Speed Transceivers
    • Fully Compliant With USB 2.0 Specification
    • Certified By USB-IF
    • Partially Programmable Descriptors
    • Adaptive Isochronous Transfer for Playback
    • Asynchronous-Isochronous Transfer for
      Record
    • Bus Powered
  • 16-Bit Delta-Sigma ADC and DAC
  • Sampling Rate:
    • 8, 11.025, 16, 22.05, 32, 44.1, or 48 kHz
  • On-Chip Clock Generator:
    • With Single 6-MHz Clock Source
  • Mono ADC with Microphone Input
    • Analog Performance at VBUS = 5 V:
      • THD+N: 0.01%
      • SNR: 92 dB
      • Dynamic Range: 90 dB
    • Decimation Digital Filter
      • Passband Ripple: ±0.05 dB
      • Stop-Band Attenuation: –65 dB
    • Single-Ended Voltage Input
    • Antialiasing Filter Included
    • Digital HPF Included
    • Microphone Bias, Microphone Amplifier, and
      Input PGA
  • Stereo DAC With Headphone Output
    • Analog Performance at VBUS = 5.0 V:
      • THD+N: 0.01% (RL > 10 kΩ)
      • THD+N: 0.02% (RL = 32 Ω)
      • SNR: 92 dB
      • Dynamic Range: 90 dB
      • PO: 13 mW (RL = 32 Ω)
      • PO: 25 mW (RL = 16 Ω)
    • Oversampling Digital Filter
      • Passband Ripple: ±0.1 dB
      • Stop-Band Attenuation: –43 dB
      • Single-Ended Voltage Output
      • Analog LPF Included
      • Sidetone PGA, Output PGA, and HP
        Amplifier
  • Multifunctions:
    • Suspend, Playback, and Record Status Flag
    • Microphone Amplifier, Mute, and Gain Control
  • Pop/Click Noise-Free
  • Single Power-Supply: 5 V Typical (VBUS)
  • Package: 32-Pin TQFP

Parametrics

Compare all products in Audio USB converters Email Download to Excel
Part number Order ADC channels DAC channels Analog inputs Analog outputs Sampling rate (Max) (kHz) Control interface Features Supply voltage(s) (V) Package size: mm2:W x L (PKG) Approx. price (US$)
PCM2912A Order now 1     2     1     2     48     H/W     USB Interface
Mic Bias
PGAs
Sidetone    
5     32TQFP: 81 mm2: 9 x 9 (TQFP | 32)     5.34 | 1ku    
PCM2901 Order now 2     2     2     2     48     HID         3.3     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     5.11 | 1ku    
PCM2904 Order now 2     2     2     2     48     HID     500mA Max Power Configuration     5     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     5.08 | 1ku