ZHCS590Q January   2011  – December 2014 LMP90097 , LMP90098 , LMP90099 , LMP90100

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 典型应用电路原理图
  5. 5 修订历史记录
  6. 6 说明（续）
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Electrical Characteristics
    6. 8.6  SPI Timing Requirements
    7. 8.7  CBS Setup and Hold Timing Requirements
    8. 8.8  SDI Timing Requirements
    9. 8.9  SDO Timing Requirements
    10. 8.10 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 True Continuous Background Calibration
      2. 9.3.2 Continuous Background Sensor Diagnostics
      3. 9.3.3 Flexible Input MUX Channels
      4. 9.3.4 Programmable Gain Amplifiers (FGA and PGA)
      5. 9.3.5 Excitation Current Sources (IB1 and IB2) - LMP90100/LMP90098
      6. 9.3.6 Signal Path
        1. 9.3.6.1 Reference Input (VREF)
        2. 9.3.6.2 Flexible Input MUX (VIN)
        3. 9.3.6.3 Selectable Gains (FGA and PGA)
        4. 9.3.6.4 Buffer (BUFF)
        5. 9.3.6.5 Internal/External CLK Selection
        6. 9.3.6.6 Programmable ODRs
        7. 9.3.6.7 Digital Filter
        8. 9.3.6.8 GPIO (D0-D6)
      7. 9.3.7 Calibration
        1. 9.3.7.1 Background Calibration
          1. 9.3.7.1.1 Types of Background Calibration
          2. 9.3.7.1.2 Using Background Calibration
        2. 9.3.7.2 System Calibration
          1. 9.3.7.2.1 System Calibration Offset Coefficient Determination Mode
          2. 9.3.7.2.2 System Calibration Gain Coefficient Determination Mode
          3. 9.3.7.2.3 Post-Calibration Scaling
      8. 9.3.8 Sensor Interface
        1. 9.3.8.1 IB1 and IB2 - Excitation Currents
        2. 9.3.8.2 Burnout Currents
          1. 9.3.8.2.1 Burnout Current Injection
        3. 9.3.8.3 Sensor Diagnostic Flags
          1. 9.3.8.3.1 SHORT_THLD_FLAG
          2. 9.3.8.3.2 RAILS_FLAG
          3. 9.3.8.3.3 POR_AFT_LST_RD:
          4. 9.3.8.3.4 OFLO_FLAGS
          5. 9.3.8.3.5 SAMPLED_CH
      9. 9.3.9 RESET and RESTART
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power Management
      2. 9.4.2 Channels Scan Mode
        1. 9.4.2.1 ScanMode0: Single-Channel Continuous Conversion
        2. 9.4.2.2 ScanMode1: Multiple-Channels Single Scan
        3. 9.4.2.3 ScanMode2: Multiple-Channels Continuous Scan
        4. 9.4.2.4 ScanMode3: Multiple-Channels Continuous Scan with Burnout Currents
    5. 9.5 Programming
      1. 9.5.1  General Rules
      2. 9.5.2  Serial Digital Interface
      3. 9.5.3  Register Address (ADDR)
      4. 9.5.4  Register Read/Write Protocol
      5. 9.5.5  Streaming
      6. 9.5.6  CSB - Chip Select Bar
      7. 9.5.7  SPI Reset
      8. 9.5.8  DRDYB - Data Ready Bar
      9. 9.5.9  DRDYB Case1: Combining SDO/DRDYB with SDO_DRDYB_DRIVER = 0x00
      10. 9.5.10 DRDYB Case2: Combining SDO/DRDYB with SDO_DRDYB_DRIVER = 0x03
      11. 9.5.11 DRDYB Case3: Routing DRDYB to D6
      12. 9.5.12 Data Only Read Transaction
      13. 9.5.13 Cyclic Redundancy Check (CRC)
      14. 9.5.14 Register Read/Write Examples
        1. 9.5.14.1 Writing To Register Examples
        2. 9.5.14.2 Reading From Register Example
      15. 9.5.15 Streaming Examples
        1. 9.5.15.1 Normal Streaming Example
        2. 9.5.15.2 Controlled Streaming Example
    6. 9.6 Register Maps
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Quick Start
      2. 10.1.2 ADC_DOUT Calculation
    2. 10.2 Typical Applications
      1. 10.2.1 3-Wire RTD Using 2 Current Sources
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curve
      2. 10.2.2 3-Wire RTD Using 1 Current Source
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curve
      3. 10.2.3 Thermocouple with Cold Junction Compensation
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
      4. 10.2.4 Application Curve
  11. 11Power Supply Recommendations
    1. 11.1 VA and VIO
    2. 11.2 VREF
  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 器件命名规则
        1. 13.1.1.1 具体定义
    2. 13.2 相关链接
    3. 13.3 商标
    4. 13.4 静电放电警告
    5. 13.5 术语表
  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

6 说明（续）

LMP90100/LMP90099/LMP90098/LMP90097 的另一个特性是连续后台传感器诊断功能，用于检测开路和短路状态以及超范围信号，无需用户干预，能够进一步提高系统可靠性。

两组独立外部基准引脚可实现多个比率测量。 此外，在 LMP90100/LMP90098 上还提供两个已匹配的可编程电流源来为诸如阻性温度检测器和桥式传感器等外部传感器供电。 此外，还提供了 7 个 GPIO 引脚与外部发光二级管 (LED) 和开关进行对接以简化绝缘格栅两侧的控制。

凭借这一系列特性，LMP90100/LMP90099/LMP90098/LMP90097 的全套模拟前端能够应用于精密的低功耗传感器应用，例如温度计、压力计、应力计和工业过程控制。 LMP90100/LMP90099/LMP90098/LMP90097 均可在扩展温度范围
-40°C 至 +125°C 内额定运行，并且采用 28 引脚 HTSSOP 外露垫封装。
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