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PCM2704C - 产品图解：
PCM2704C-具有线路输出和 S/PDIF 输出、总线供电/自供电的 98dB SNR 立体声全速 DAC（外部 ROM 接口）
PCM2704C-音频USB转换器-音频转换器-音频
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TI产品 - PCM2704C介绍

PCM2704C - 具有线路输出和 S/PDIF 输出、总线供电/自供电的 98dB SNR 立体声全速 DAC（外部 ROM 接口）

PCM2704C是TI德州仪器公司的一款音频USB转换器产品，PCM2704C是具有线路输出和 S/PDIF 输出、总线供电/自供电的 98dB SNR 立体声全速 DAC（外部 ROM 接口），本站介绍了PCM2704C的封装应用图解、特点和优点、功能等，并给出了与PCM2704C相关的TI元器件型号供参考。

PCM2704C - 具有线路输出和 S/PDIF 输出、总线供电/自供电的 98dB SNR 立体声全速 DAC（外部 ROM 接口） - 音频USB转换器 - 音频转换器 - 德州仪器

产品特性
  • On-Chip USB Interface:
    • No Dedicated Device Driver Needed
    • Full-Speed Transceivers
    • Fully Compliant With USB 2.0 Specification
      • USB 1.1 Descriptors With USB Audio Class Support
    • Certified by USB-IF
    • Partially Programmable Descriptors
    • Adaptive Isochronous Transfer for Playback
    • Bus-Powered or Self-Powered Operation
  • Sampling Rates: 32 kHz, 44.1 kHz, and 48 kHz
  • On-Chip Clock Generator With Single 12-MHz Clock Source
  • Single Power Supply:
    • Bus-Powered: 5 V, Typical (VBUS)
    • Self-Powered: 3.3 V, Typical
  • 16-Bit Delta-Sigma Stereo DAC
    • Analog Performance at 5 V (Bus-Powered), 3.3 V (Self-Powered):
      • THD + N: 0.006% RL > 10 kΩ, Self-Powered
      • THD + N: 0.025% RL = 32 Ω
      • SNR = 98 dB
      • Dynamic Range: 98 dB
      • PO = 12 mW, RL = 32 Ω
    • Oversampling Digital Filter
      • Passband Ripple = ±0.04 dB
      • Stop-Band Attenuation = –50 dB
    • Single-Ended Voltage Output
    • Analog LPF Included
  • Multiple Functions:
    • Up to Eight Human Interface Device (HID) Interfaces (Model and Setting Dependent)
    • Suspend Flag
    • S/PDIF Out With SCMS
    • External ROM Interface (PCM2704C/6C)
    • Serial Programming Interface (PCM2705C/7C)
    • I2S Interface (Selectable on PCM2706C/7C)
产品应用
  • USB Headphones
  • USB Audio Speaker
  • USB CRT/LCD Monitor
  • USB Audio Interface Box
  • USB-Featured Consumer Audio Product
产品说明

The PCM270xC are TI's single-chip USB stereo audio digital-to-analog converters (DACs) with USB 2.0 compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some areas (for example, vendor ID/product ID) through the use of an external ROM (PCM2704C and PCM2706C) or serial peripheral interface (SPI) (PCM2705C and PCM2707C). The PCM270xC also employ SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog phase-locked loops (PLLs) with SpAct enable playback with low clock jitter.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
PCM2704C SSOP (28)5.30 mm × 10.20 mm
PCM2705C
PCM2706CTQFP (32)7.00 mm × 7.00 mm
PCM2707C
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