ZHCSFP3C August   2016  – June 2017 ADS124S06 , ADS124S08

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
  4. 修订历史记录
  5. Device Family Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. Parameter Measurement Information
    1. 8.1 Noise Performance
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Multiplexer
      2. 9.3.2  Low-Noise Programmable Gain Amplifier
        1. 9.3.2.1 PGA Input-Voltage Requirements
        2. 9.3.2.2 PGA Rail Flags
        3. 9.3.2.3 Bypassing the PGA
      3. 9.3.3  Voltage Reference
        1. 9.3.3.1 Internal Reference
        2. 9.3.3.2 External Reference
        3. 9.3.3.3 Reference Buffers
      4. 9.3.4  Clock Source
      5. 9.3.5  Delta-Sigma Modulator
      6. 9.3.6  Digital Filter
        1. 9.3.6.1 Low-Latency Filter
          1. 9.3.6.1.1 Low-Latency Filter Frequency Response
          2. 9.3.6.1.2 Data Conversion Time for the Low-Latency Filter
        2. 9.3.6.2 Sinc3 Filter
          1. 9.3.6.2.1 Sinc3 Filter Frequency Response
          2. 9.3.6.2.2 Data Conversion Time for the Sinc3 Filter
        3. 9.3.6.3 Note on Conversion Time
        4. 9.3.6.4 50-Hz and 60-Hz Line Cycle Rejection
        5. 9.3.6.5 Global Chop Mode
      7. 9.3.7  Excitation Current Sources (IDACs)
      8. 9.3.8  Bias Voltage Generation
      9. 9.3.9  System Monitor
        1. 9.3.9.1 Internal Temperature Sensor
        2. 9.3.9.2 Power Supply Monitors
        3. 9.3.9.3 Burn-Out Current Sources
      10. 9.3.10 Status Register
        1. 9.3.10.1 POR Flag
        2. 9.3.10.2 RDY Flag
        3. 9.3.10.3 PGA Output Voltage Rail Monitors
        4. 9.3.10.4 Reference Monitor
      11. 9.3.11 General-Purpose Inputs and Outputs (GPIOs)
      12. 9.3.12 Low-Side Power Switch
      13. 9.3.13 Cyclic Redundancy Check (CRC)
      14. 9.3.14 Calibration
        1. 9.3.14.1 Offset Calibration
        2. 9.3.14.2 Gain Calibration
    4. 9.4 Device Functional Modes
      1. 9.4.1 Reset
        1. 9.4.1.1 Power-On Reset
        2. 9.4.1.2 RESET Pin
        3. 9.4.1.3 Reset by Command
      2. 9.4.2 Power-Down Mode
      3. 9.4.3 Standby Mode
      4. 9.4.4 Conversion Modes
        1. 9.4.4.1 Continuous Conversion Mode
        2. 9.4.4.2 Single-Shot Conversion Mode
        3. 9.4.4.3 Programmable Conversion Delay
    5. 9.5 Programming
      1. 9.5.1 Serial Interface
        1. 9.5.1.1 Chip Select (CS)
        2. 9.5.1.2 Serial Clock (SCLK)
        3. 9.5.1.3 Serial Data Input (DIN)
        4. 9.5.1.4 Serial Data Output and Data Ready (DOUT/DRDY)
        5. 9.5.1.5 Data Ready (DRDY)
        6. 9.5.1.6 Timeout
      2. 9.5.2 Data Format
      3. 9.5.3 Commands
        1. 9.5.3.1  NOP
        2. 9.5.3.2  WAKEUP
        3. 9.5.3.3  POWERDOWN
        4. 9.5.3.4  RESET
        5. 9.5.3.5  START
        6. 9.5.3.6  STOP
        7. 9.5.3.7  SYOCAL
        8. 9.5.3.8  SYGCAL
        9. 9.5.3.9  SFOCAL
        10. 9.5.3.10 RDATA
        11. 9.5.3.11 RREG
        12. 9.5.3.12 WREG
      4. 9.5.4 Reading Data
        1. 9.5.4.1 Read Data Direct
        2. 9.5.4.2 Read Data by RDATA Command
        3. 9.5.4.3 Sending Commands When Reading Data
      5. 9.5.5 Interfacing with Multiple Devices
    6. 9.6 Register Map
      1. 9.6.1 Configuration Registers
        1. 9.6.1.1  Device ID Register (address = 00h) [reset = xxh]
        2. 9.6.1.2  Device Status Register (address = 01h) [reset = 80h]
        3. 9.6.1.3  Input Multiplexer Register (address = 02h) [reset = 01h]
        4. 9.6.1.4  Gain Setting Register (address = 03h) [reset = 00h]
        5. 9.6.1.5  Data Rate Register (address = 04h) [reset = 14h]
        6. 9.6.1.6  Reference Control Register (address = 05h) [reset = 10h]
        7. 9.6.1.7  Excitation Current Register 1 (address = 06h) [reset = 00h]
        8. 9.6.1.8  Excitation Current Register 2 (address = 07h) [reset = FFh]
        9. 9.6.1.9  Sensor Biasing Register (address = 08h) [reset = 00h]
        10. 9.6.1.10 System Control Register (address = 09h) [reset = 10h]
        11. 9.6.1.11 Offset Calibration Register 1 (address = 0Ah) [reset = 00h]
        12. 9.6.1.12 Offset Calibration Register 2 (address = 0Bh) [reset = 00h]
        13. 9.6.1.13 Offset Calibration Register 3 (address = 0Ch) [reset = 00h]
        14. 9.6.1.14 Gain Calibration Register 1 (address = 0Dh) [reset = 00h]
        15. 9.6.1.15 Gain Calibration Register 2 (address = 0Eh) [reset = 00h]
        16. 9.6.1.16 Gain Calibration Register 3 (address = 0Fh) [reset = 40h]
        17. 9.6.1.17 GPIO Data Register (address = 10h) [reset = 00h]
        18. 9.6.1.18 GPIO Configuration Register (address = 11h) [reset = 00h]
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Serial Interface Connections
      2. 10.1.2 Analog Input Filtering
      3. 10.1.3 External Reference and Ratiometric Measurements
      4. 10.1.4 Establishing a Proper Input Voltage
      5. 10.1.5 Unused Inputs and Outputs
      6. 10.1.6 Pseudo Code Example
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Register Settings
      3. 10.2.3 Application Curves
    3. 10.3 Do's and Don'ts
  11. 11Power Supply Recommendations
    1. 11.1 Power Supplies
    2. 11.2 Power-Supply Sequencing
    3. 11.3 Power-On Reset
    4. 11.4 Power-Supply Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 开发支持
    2. 13.2 文档支持
      1. 13.2.1 相关文档
    3. 13.3 相关链接
    4. 13.4 接收文档更新通知
    5. 13.5 社区资源
    6. 13.6 商标
    7. 13.7 静电放电警告
    8. 13.8 Glossary
  14. 14机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

特性

  • 低功耗:低至 280µA
  • 低噪声可编程增益放大器 (PGA):19nVRMS(增益 = 128 时)
  • 可编程增益:1 至 128
  • 可编程数据传输速率:2.5SPS 至 4kSPS
  • 采用低延迟数字滤波器,在
    ≤ 20SPS 时实现 50Hz 和 60Hz 同步抑制
  • 具有 12 路 (ADS124S08) 或 6 路 (ADS124S06) 独立可选输入的模拟多路复用器
  • 两个匹配且可编程的传感器激励电流源:10μA 至 2000µA
  • 内部基准:2.5V,最大漂移为 10ppm/°C
  • 内部振荡器:4.096MHz,精度为 1.5%
  • 内部温度传感器
  • 扩展型故障检测电路
  • 自偏移校准与系统校准
  • 4 个通用 I/O
  • 串行外设接口 (SPI) 兼容接口,可选用循环冗余校验 (CRC)
  • 模拟电源:单极(2.7V 到 5.25V)或双极 (±2.5V)
  • 数字电源:2.7V 到 3.6V
  • 工作温度:-50°C 至 +125°C

应用

  • 传感器和变送器:
    温度、压力、应力,流量
  • 可编程逻辑控制器 (PLC) 和分布式控制系统 (DCS) 模拟输入模块
  • 温度控制器
  • 人工气候室,工业烘箱

说明

ADS124S06 和 ADS124S08 均为高精度 24 位 Δ-Σ 模数转换器 (ADC),兼具低功耗特性与多种集成 特性, 能够降低系统成本并减少小型传感器信号测量 应用 中的组件数。

这两款 ADC 均配有可配置的数字滤波器,能够在嘈杂的工业环境中提供低延迟转换结果和 50Hz 或
60Hz 噪声抑制。可编程增益放大器 (PGA) 具备低噪声特性,并且可提供 1 到 128 的增益,能够为电阻桥或热电偶应用放大低幅值 信号,SN65HVD101 和 'HVD102 采用 20 引脚 RGB 封装 (4 mm × 3.5 mm QFN)。此外,这两款器件还集成有一个低漂移 2.5V 电压基准,减小了印刷电路板 (PCB) 面积。最后还有两个可编程的激励电流源 (IDAC),便于提供准确的电阻式温度检测器 (RTD) 偏置。

输入多路复用器支持适用于 ADS124S08 的 12 路输入和适用于 ADS124S06 的 6 路输入。这些输入能够以任意组合形式连接到 ADC,从而提高设计灵活性。此外,这两款器件还 包含 传感器烧毁检测、热电偶电压偏置和系统监视等功能以及四个通用 I/O。

这两款器件采用超薄四方扁平无引线 (VQFN)-32 或薄型四方扁平 (TQFP)-32 封装。

器件信息

订货编号 封装(引脚) 封装尺寸
ADS124S0x TQFP (32) 5.0mm × 5.0mm
VQFN (32) 5.0mm × 5.0mm

功能方框图

ADS124S06 ADS124S08 ai_fbd_sbas660.gif