产品详情

Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 275 Analog supply (min) (V) 4.75 Analog supply (max) (V) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 2.2
Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 275 Analog supply (min) (V) 4.75 Analog supply (max) (V) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 2.2
HTQFP (PAP) 64 144 mm² 12 x 12
  • Simultaneously Measure Four/Eight Channels
  • Up to 144kSPS Data Rate
  • AC Performance:
    70kHz Bandwidth
    111dB SNR (High-Resolution Mode)
    –108dB THD
  • DC Accuracy:
    0.8µV/°C Offset Drift
    1.3ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 144kSPS, 106dB SNR
    High-Resolution: 52kSPS, 111dB SNR
    Low-Power: 52kSPS, 31mW/ch
    Low-Speed: 10kSPS, 7mW/ch
  • Linear Phase Digital Filter
  • SPI™ or Frame-Sync Serial Interface
  • Low Sampling Aperture Error
  • Modulator Output Option (digital filter bypass)
  • Analog Supply: 5V
  • Digital Core: 1.8V
  • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

    PowerPAD is a trademark of Texas Instruments, Inc.
    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    • Simultaneously Measure Four/Eight Channels
    • Up to 144kSPS Data Rate
    • AC Performance:
      70kHz Bandwidth
      111dB SNR (High-Resolution Mode)
      –108dB THD
    • DC Accuracy:
      0.8µV/°C Offset Drift
      1.3ppm/°C Gain Drift
    • Selectable Operating Modes:
      High-Speed: 144kSPS, 106dB SNR
      High-Resolution: 52kSPS, 111dB SNR
      Low-Power: 52kSPS, 31mW/ch
      Low-Speed: 10kSPS, 7mW/ch
    • Linear Phase Digital Filter
    • SPI™ or Frame-Sync Serial Interface
    • Low Sampling Aperture Error
    • Modulator Output Option (digital filter bypass)
    • Analog Supply: 5V
    • Digital Core: 1.8V
    • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

    PowerPAD is a trademark of Texas Instruments, Inc.
    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

    Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

    The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

    Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.

    Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

    Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

    The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

    Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.

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    技术文档

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    类型 项目标题 下载最新的英语版本 日期
    * 数据表 Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters 数据表 (Rev. F) 2011年 2月 17日
    更多文献资料 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023年 3月 29日
    电子书 Fundamentals of Precision ADC Noise Analysis 2020年 6月 19日
    更多文献资料 Voltage-reference impact on total harmonic distortion 2016年 8月 1日
    电子书 Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015年 3月 19日
    技术文章 Leverage coherent sampling and FFT windows when evaluating SAR ADCs (Part 1) 2015年 3月 13日
    更多文献资料 所选封装材料的热学和电学性质 2008年 10月 16日
    更多文献资料 模数规格和性能特性术语表 (Rev. A) 下载最新的英文版本 (Rev.B) 2008年 10月 16日
    更多文献资料 高速数据转换 下载英文版本 2008年 10月 16日

    设计和开发

    如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。

    评估板

    ADCPRO — 模数转换器 Pro (ADCPro™) 评估软件

    ADCPro™ 是一种模块化软件系统,无需昂贵的逻辑分析仪和复杂的分析程序即可对模数转换器 (ADC) 进行评估。单独使用适用于对从 ADC 测试中捕获的数据集执行分析;与德州仪器 (TI) ADC 评估模块 (EVM) 以及合适的数据采集卡配合使用时,它便可作为功能强大的评估测试包的一部分。

    lock = 需要出口许可(1 分钟)
    用户指南: PDF
    评估板

    ADS1274EVM-PDK — ADS1274 性能演示套件 (PDK)

    ADS1274EVM-PDK 是一套完整的评估/演示套件,它将 ADS1274EVM 与用作主板的基于 DSP 的 MMB0 板组合在一起。此套件提供了主板和 ADCPro™ 评估软件,可与运行 Microsoft™ Windows XP 或 Windows 7 操作系统的个人电脑配合使用。此电路板组合能实现对 ADS1274 器件的完整评估。

     

     

     

    用户指南: PDF | HTML
    计算工具

    ADC-INPUT-CALC — 支持多种输入类型的模数转换器 (ADC) 输入驱动器设计工具

    ADC-INPUT-CALC 是一种在线工具,可为设计模数转换器 (ADC) 的输入缓冲器提供支持。它提供 24 种不同的基于运算放大器的缓冲器电路,这些电路可用于驱动 ADC 输入。可用拓扑涵盖差分单端和变压器耦合输入设计。支持交流耦合和直流耦合设计以及单电源和双电源拓扑。提供两种模式:初学者模式和专家模式。在初学者模式中,设计人员先回答一系列问题,然后会看到解决方案原理图,在某些情况下,还会看到解决方案的可选版本。在专家模式下,设计人员会看到用方框图形式显示的所有 24 (...)
    计算工具

    ADS1X7X-EXCEL-CALC-TOOL — ADS1x7x Excel™ 计算器工具

      The ADS1x7x Excel calculator tool provides the user with several easy-to-use tools to simplify the configuration of ADS1x7x devices. The tool helps the user understand different settings and operating modes that aid in optimizing a design with ADS1x7x wide-bandwidth analog-to-digital converters (...)
    计算工具

    ANALOG-ENGINEER-CALC — 模拟工程师计算器

    模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面,其中显示各种常见计算的列表(从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件)。除了可用作单独的工具之外,该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。
    lock = 需要出口许可(1 分钟)
    模拟工具

    PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

    PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

    借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。

    在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
    模拟工具

    TINA-TI — 基于 SPICE 的模拟仿真程序

    TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能,允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

    TINA-TI 安装需要大约 500MB。直接安装,如果想卸载也很容易。我们相信您肯定会爱不释手。

    TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能,但不支持完整版 TINA 所提供的某些其他功能。

    如需获取可用 TINA-TI 模型的完整列表,请参阅:SpiceRack - 完整列表 

    需要 HSpice (...)

    用户指南: PDF
    下载英文版本 (Rev.A): PDF
    封装 引脚数 下载
    HTQFP (PAP) 64 了解详情

    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
    • 认证摘要
    • 持续可靠性监测

    推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

    支持与培训

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