ZHCSB68A June   2013  – December 2014 TMP451

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Temperature Measurement Data
        1. 7.3.1.1 Standard Binary-to-Decimal Temperature Data Calculation Example
        2. 7.3.1.2 Standard Decimal-to-Binary Temperature Data Calculation Example
      2. 7.3.2 Series Resistance Cancellation
      3. 7.3.3 Differential Input Capacitance
      4. 7.3.4 Filtering
      5. 7.3.5 Sensor Fault
      6. 7.3.6 ALERT and THERM Functions
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode (SD)
      2. 7.4.2 One-shot Mode
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
        1. 7.5.1.1 Bus Overview
        2. 7.5.1.2 Bus Definitions
        3. 7.5.1.3 Serial Bus Address
        4. 7.5.1.4 Read and Write Operations
        5. 7.5.1.5 Time-out Function
        6. 7.5.1.6 High-speed Mode
        7. 7.5.1.7 General Call Reset
    6. 7.6 Register Map
      1. 7.6.1 Register Information
        1. 7.6.1.1  Pointer Register
        2. 7.6.1.2  Temperature Registers
        3. 7.6.1.3  Local Temperature High Byte Register (offset: Read = 00h; Write = N/A) [reset = 00h]
        4. 7.6.1.4  Remote Temperature High Byte Register (offset: Read = 01h; Write = N/A) [reset = 00h]
        5. 7.6.1.5  Status Register (offset: Read = 02h; Write = N/A) [reset = N/A]
        6. 7.6.1.6  Configuration Register (offset: Read = 03h; Write = 09h) [reset = 00h]
        7. 7.6.1.7  Conversion Rate Register (offset: Read = 04h; Write = 0Ah) [reset = 08h]
        8. 7.6.1.8  Local Temperature High Limit Register (offset: Read = 05h; Write = 0Bh) [reset = 55h]
        9. 7.6.1.9  Local Temperature Low Limit Register (offset: Read = 06h; Write = 0Ch) [reset = 00h]
        10. 7.6.1.10 Remote Temperature High Limit High Byte Register (offset: Read = 07h; Write = 0Dh) [reset = 55h]
        11. 7.6.1.11 Remote Temperature Low Limit High Byte Register (offset: Read = 08h; Write = 0Eh) [reset = 00h]
        12. 7.6.1.12 One-shot Start Register (offset: Read = N/A; Write = 0Fh) [reset = N/A]
        13. 7.6.1.13 Remote Temperature Low Byte Register (offset: Read = 10h; Write = N/A) [reset = 00h]
        14. 7.6.1.14 Remote Temperature Offset High Byte Register (offset: Read = 11h; Write = 11h) [reset = 00h]
        15. 7.6.1.15 Remote Temperature Offset Low Byte Register (offset: Read = 12h; Write = 12h) [reset = 00h]
        16. 7.6.1.16 Remote Temperature High Limit Low Byte Register (offset: Read = 13h; Write = 13h) [reset = 00h]
        17. 7.6.1.17 Remote Temperature Low Limit Low Byte Register (offset: Read = 14h; Write = 14h) [reset = 00h]
        18. 7.6.1.18 Local Temperature Low Byte Register (offset: Read = 15h; Write = N/A) [reset = 00h]
        19. 7.6.1.19 Remote Temperature THERM Limit Register (offset: Read = 19h; Write = 19h) [reset = 6C]
        20. 7.6.1.20 Local Temperature THERM Limit Register (offset: Read = 20h; Write = 20h) [reset = 55]
        21. 7.6.1.21 THERM Hysteresis Register (offset: Read = 21h; Write = 21h) [reset = 0Ah]
        22. 7.6.1.22 Consecutive ALERT Register (offset: Read = 22h; Write = 22h) [reset = 01h]
        23. 7.6.1.23 η-Factor Correction Register (offset: Read = 23h; Write = 23h) [reset = 00h]
        24. 7.6.1.24 Digital Filter Control Register (offset: Read = 24h; Write = 24h) [reset = 00h]
        25. 7.6.1.25 Manufacturer ID Register (offset: Read = FEh; Write = N/A) [reset = 55]
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 商标
    2. 11.2 静电放电警告
    3. 11.3 术语表
  12. 12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

1 特性

  • 本地和远程二极管传感器精度为 ±1°C
  • 本地和远程通道的分辨率为 0.0625°C
  • 1.7V 至 3.6V 电源和逻辑电压范围
  • 27µA 运行电流，3µA 关断电流
  • 串联电阻抵消
  • η 因子和偏移校正
  • 可编程数字滤波器
  • 二极管故障检测
  • 两线制和 SMBus™ 串行接口
  • 8 引线超薄小外形尺寸 (WSON)（超薄四方扁平 (WQFN)）封装

2 应用

  • 处理器和现场可编程栅极阵列 (FPGA) 温度监视
  • 智能手机和平板电脑
  • 服务器、台式机和笔记本电脑
  • 电信设备以及存储局域网 (SAN)

3 说明

TMP451 器件是一款高精度低功耗远程温度传感器监控器，内置有一个本地温度传感器。 这类远程温度传感器通常采用低成本离散式 NPN 或 PNP 晶体管，或者基板热晶体管或二极管，这些器件都是微处理器、微控制器或 FPGA 的组成部件。 本地和远程传感器均用 12 位数字编码表示温度，分辨率为 0.0625°C。 对于本地和远程温度传感器，在典型运行范围内，温度精度为 ±1°C（最大值）。 此两线制串口接受 SMBus 通信协议。

诸如串联电阻抵消、可编程非线性因子（η 因子）、可编程偏移、可编程温度限制和一个可编程数字滤波器等的高级特性被组合在一起以提供一个具有更佳准确度和抗扰度的稳健耐用热度监控解决方案。

TMP451 器件适用于多个位置和多种汽车子系统中的高精度温度测量。 此器件的额定运行电源电压范围为 1.7V 至 3.6V，额定工作温度范围为 -40°C 至 125°C。

器件信息(1)

器件型号 封装 封装尺寸（标称值）
TMP451 WSON (8) 2.00mm x 2.00mm
  1. 要了解所有可用封装，请见数据表末尾的可订购产品附录。

简化电路原理图

fpd_bos686.gif