JAJSAR0B March   2007  – October 2017 LM95214

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     リモート1温度エラー、TA＝TD
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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: Temperature-to-Digital Converter
    6. 7.6 Logic Electrical Characteristics: Digital DC Characteristics
    7. 7.7 Switching Characteristics: SMBus Digital
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Conversion Sequence
      2. 8.3.2 Power-On-Default States
      3. 8.3.3 SMBus Interface
      4. 8.3.4 Temperature Conversion Sequence
        1. 8.3.4.1 Digital Filter
      5. 8.3.5 Fault Queue
      6. 8.3.6 Temperature Data Format
      7. 8.3.7 SMBDAT Open-Drain Output
      8. 8.3.8 TCRIT1, TCRIT2, and TCRIT3 Outputs
      9. 8.3.9 TCRIT Limits and TCRIT Outputs
    4. 8.4 Device Functional Modes
      1. 8.4.1 Diode Fault Detection
      2. 8.4.2 Communicating With the LM95214
      3. 8.4.3 Serial Interface Reset
      4. 8.4.4 One-Shot Conversion
    5. 8.5 Register Maps
      1. 8.5.1 LM95214 Registers
        1. 8.5.1.1 Value Registers
          1. 8.5.1.1.1 Local Value Registers
          2. 8.5.1.1.2 Remote Temperature Value Registers With Signed Format
          3. 8.5.1.1.3 Remote Temperature Value Registers With Unsigned Format
        2. 8.5.1.2 Diode Configuration Register
          1. 8.5.1.2.1 Remote 1-4 Offset
        3. 8.5.1.3 Configuration Registers
          1. 8.5.1.3.1 Main Configuration Register
          2. 8.5.1.3.2 Conversion Rate Register
          3. 8.5.1.3.3 Channel Conversion Enable
          4. 8.5.1.3.4 Filter Setting
          5. 8.5.1.3.5 1-Shot
        4. 8.5.1.4 Status Registers
          1. 8.5.1.4.1 Common Status Register
          2. 8.5.1.4.2 Status 1 Register (Diode Fault)
          3. 8.5.1.4.3 Status 2 (TCRIT1)
          4. 8.5.1.4.4 Status 3 (TCRIT2)
          5. 8.5.1.4.5 Status 4 (TCRIT3)
        5. 8.5.1.5 Mask Registers
          1. 8.5.1.5.1 TCRIT1 Mask Register
          2. 8.5.1.5.2 TCRIT2 Mask Registers
          3. 8.5.1.5.3 TCRIT3 Mask Register
        6. 8.5.1.6 Limit Registers
          1. 8.5.1.6.1 Local Limit Register
          2. 8.5.1.6.2 Remote Limit Registers
          3. 8.5.1.6.3 Common Tcrit Hysteresis Register
        7. 8.5.1.7 Identification Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
    3. 9.3 Diode Non-Ideality
      1. 9.3.1 Diode Non-Ideality Factor Effect on Accuracy
      2. 9.3.2 Calculating Total System Accuracy
      3. 9.3.3 Compensating for Different Non-Ideality
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントの更新通知を受け取る方法
    2. 12.2 コミュニティ・リソース
    3. 12.3 商標
    4. 12.4 静電気放電に関する注意事項
    5. 12.5 Glossary
  13. 13メカニカル、パッケージ、および注文情報

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.1 Overview

The LM95214 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can monitor the temperature of four remote diodes as well as its own temperature. The LM95214 can be used to very accurately monitor the temperature of up to four external devices such as microprocessors, graphics processors or diode-connected 2N3904 transistor. Any device whose thermal diode can be modeled by an MMBT3904 transistor will work well with the LM95214.

The LM95214 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95214 has a Sigma-Delta ADC (Analog-to-Digital Converter) core which provides the first level of noise immunity. For improved performance in a noisy environment the LM95214 includes programmable digital filters for Remote Diode 1 and 2 temperature readings. When the digital filters are invoked the resolution for Remote Diode 1 and 2 readings increases to 0.03125°C. For maximum flexibility and best accuracy the LM95214 includes offset registers that allow calibration of other diode types.