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PCM2912A

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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

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PCM2912A

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产品详情

Number of ADC channels 1 Number of DAC channels 2 Analog inputs 1 Sampling rate (max) (kHz) 48 Control interface H/W Features Mic bias, PGAs, Sidetone, USB interface Analog outputs 2 Rating Catalog Operating temperature range (°C) -25 to 85
Number of ADC channels 1 Number of DAC channels 2 Analog inputs 1 Sampling rate (max) (kHz) 48 Control interface H/W Features Mic bias, PGAs, Sidetone, USB interface Analog outputs 2 Rating Catalog Operating temperature range (°C) -25 to 85
TQFP (PJT) 32 81 mm² 9 x 9
  • 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
  • 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

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.

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.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 PCM2912A Audio Codec With USB Interface, Mono Microphone Input and Stereo Headphone Output 数据表 (Rev. A) PDF | HTML 2015年 8月 25日
* 勘误表 Application Information for Difference Between PCM2912A and PCM2912 2008年 11月 25日
EVM 用户指南 DEM-PCM2912A 评估模块 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2024年 4月 24日
应用手册 Operating Environments for PCM2912A Applications (Rev. A) 2016年 11月 10日
应用手册 Solving Enumeration Errors in USB Audio DAC and CODEC Designs 2009年 10月 30日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日

设计和开发

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评估板

DEM-PCM2912AEVM — DEM-PCM2912AEVM 评估模块

The DEM-PCM2912A EVM is a complete evaluation platform for the 16-bit, mono microphone input and stereo headphone output PCM2912A bus-powered audio codec with a USB interface. All necessary connectors and circuitry are provided for interfacing to audio test systems and commercial audio equipment.

A (...)

用户指南: PDF | HTML
英语版 (Rev.A): PDF | HTML
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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