Audio Codec 1ADC / 1DAC 16-Bit 32-Pin TQFP Tray

The PCM2912 is the Texas Instruments single-chip, USB stereo audio CODEC with USB 2.0-compliant full-speed protocol controller and analog front end (AFE) function for headset application.The USB protocol controller works with no software code, but USB descriptors can be modified on request(1).The PCM2912 employs SpActG 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 rate with low clock jitters.

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, 48 kHz

On-Chip Clock Generator:

• With Single 6-MHz Clock Source

Mono ADC with Microphone Input

• Analog Performance at V_BUS = 5 V:
• THD+N:0.01%
• SNR:92 dB
• Dynamic Range:90 dB

Decimation Digital Filter

• Pass-Band 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 V_BUS = 5.0 V:
  • THD+N:0.01% (R_L > 10 kO
  )
  • THD+N:0.02% (R_L = 32 O
  )
  • SNR:92 dB
  • Dynamic Range:90 dB
  • PO:13 mW (R_L = 32 O)
  • PO:25 mW (R_L = 16 O)
• Oversampling Digital Filter
  • Pass-Band 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 Typ (V_BUS)
• Package: 32-Pin TQFP

APPLICATIONS

• USB Headset
• USB Headphone
• USB Speaker
• USB Featured Consumer Audio Product
• USB Audio Interface Box
• USB Monitor
• Video Conference System