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ADAU1977WBCPZ-R7
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ADAU1977WBCPZ-R7

  • 所属类别：ADC模数转换器
  • 产品名称：集成诊断功能的四通道ADC
  • 厂商：AD
  • 生产批号：15+
  • 封装：40 ld LFCSP
  • 库存状态：有库存
  • 库存量：2330
  • 最低订购量：1
  • 详细资料：点击查找ADAU1977WBCPZ-R7的pdf资料
  • 点击询价
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  • Product Introduction

Advantages and features:

  • 带诊断功能的可编程麦克风偏置（5 V至9 V）
  • 4路10 V rms直接耦合差分输入
  • 利用片内PLL获得主时钟
  • 低电磁辐射设计
  • ADC动态范围：106 dB
  • THD + N：-95 dB
  • 可选数字高通滤波器
  • 24位ADC，8 kHz至192 kHz采样速率

  • Product Details:

    ADAU1977集成4个高性能analog-to-digital converter(ADC)，其直接耦合输入具有10 V rms性能。该ADC采用多位Σ-Δ架构，其连续时间前端能够实现低EMI性能。它可以直接连接驻极体麦克风(ECM)，并为麦克风供电提供所需的偏置。内置的诊断电路可检测输入线路上的故障，包括针对麦克风输入故障的全面诊断。可报告以下故障：电池短路、麦克风偏置短路、接地短路、正负输入引脚之间短路和输入引脚开路。此外，每种诊断故障均能以IRQ标志表示，以方便系统设计。同时，它还内置I2C/SPI控制端口。ADAU1977仅采用3.3 V单电源供电。器件内部可产生麦克风偏置电压。麦克风偏置能够通过5 V至9 V范围内的几种步长进行编程。低功耗架构则降低了器件的功耗。片内PLL可从外部时钟输入或帧时钟（采样速率时钟）获得主时钟。当使用帧时钟时，由于PLL的存在，系统中无需使用独立的高频主时钟。ADAU1977采用40引脚LFCSP封装。 应用
    • 汽车音频系统
    • 有源噪声消除系统

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