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PCM2912A - 产品图解：
PCM2912A-音频USB转换器-音频转换器-音频
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TI产品 - PCM2912A介绍

PCM2912A - 具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器

PCM2912A是TI德州仪器公司的一款音频USB转换器产品，PCM2912A是具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器，本站介绍了PCM2912A的封装应用图解、特点和优点、功能等，并给出了与PCM2912A相关的TI元器件型号供参考。

PCM2912A - 具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器 - 音频USB转换器 - 音频转换器 - 德州仪器

产品特性
  • 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
产品应用
  • USB Headset
  • USB Headphone
  • USB Speaker
  • USB Featured Consumer Audio Product
  • USB Audio Interface Box
  • USB Monitor
  • Video Conference System
产品说明

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.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
PCM2912ATQFP (32)7.00 mm × 7.00 mm
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