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ADS1278

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适用于宽带宽应用的 24 位、144kSPS 8 通道同步采样 Δ-Σ ADC

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ADS127L18 正在供货 八通道、同步采样、512kSPS 宽带 24 位 Δ-Σ ADC Higher sampling rate (512 kSPS)

ADS1278

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产品详情

Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 8 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 105 Power consumption (typ) (mW) 530 Analog supply voltage (min) (V) 4.75 Analog supply voltage (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 8 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 105 Power consumption (typ) (mW) 530 Analog supply voltage (min) (V) 4.75 Analog supply voltage (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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    顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
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    应用手册 所选封装材料的热学和电学性质 2008年 10月 16日
    应用手册 模数规格和性能特性术语表 (Rev. A) 最新英语版本 (Rev.B) 2008年 10月 16日
    应用手册 高速数据转换 英语版 2008年 10月 16日

    设计与开发

    如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

    评估板

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    ADS1278EVM-PDK 是一个用于评估 ADS1278 性能的平台。ADS1278 是一款 24 位 8 通道同步采样 Δ-Σ 模数转换器 (ADC)。此评估套件包括 ADS1278EVM 电路板和精密主机接口 (PHI) 控制器板，借助此套件可使随附的计算机软件通过 USB 与 ADC 进行通信，实现数据采集和分析。
    用户指南: PDF | HTML
    英语版 (Rev.B): PDF | HTML
    TI.com 上无现货
    仿真模型

    ADS1278 IBIS Model (Rev. A)

    SCAC098A.ZIP (45 KB) - IBIS Model
    下载
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    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。

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    用户指南: PDF
    英语版 (Rev.A): PDF
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    TIDA-00002 — 针对高温应用的苛刻环境采集终端 (HEAT) EVM 平台

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    订购和质量

    包含信息：
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    • 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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    支持和培训

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