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

7.5 Electrical Characteristics: Temperature-to-Digital Converter

minimum and maximum specifications are over –40°C to +125°C and V+ = +3 V to 3.6 V (unless otherwise noted); typical specifications are at TA = TJ = 25°C and V+ = 3.3 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Temperature error using local diode TA = –40°C to +125°C, (1) –2 ±1 +2 °C
Temperature error using an MMBT3904 transistor remote diode(2) TA = +25°C to +85°C
TD = +60°C to +100°C		 –1.1 +1.1 °C
TA = +25°C to +85°C
TD = –40°C to +125°C		 –1.3 +1.3 °C
TA = –40°C to +85°C
TD = –40°C to +125°C		 –3 +3 °C
TA = –40°C to +85°C
TD = 125°C to +140°C		 –3.3 +3.3 °C
Local diode measurement resolution 11 Bits
0.125 °C
Remote diode measurement resolution Digital filter off 11 Bits
0.125 °C
Digital filter on (Remote Diodes 1 and 2 only) 13 Bits
0.03125 °C
Conversion time of all temperatures at the fastest setting(4) All channels are enabled in default state 1100 1210 ms
1 external channel 31 34 ms
Local only 30 33 ms
Quiescent current (3) SMBus inactive, 1-Hz conversion rate, channels in default state 570 800 µA
Shutdown 360 µA
D− Source voltage 0.4 V
Remote diode source current High level 160 230 µA
Low level 10
Power-On reset threshold Measured on VDD input, falling edge 1.6 2.8 V
TCRIT1 pin temperature threshold Default diodes 1 and 2 only 110 °C
TCRIT2 pin temperature threshold Default all channels 85 °C
TCRIT3 pin temperature threshold Default diodes 3 and 4 only 85 °C
(1) Local temperature accuracy does not include the effects of self-heating. The rise in temperature due to self-heating is the product of the internal power dissipation of the LM95214 and the thermal resistance. See under Recommended Operating Conditions table for the thermal resistance to be used in the self-heating calculation.
(2) The accuracy of the LM95214CISD is ensured when using a typical MMBT3904 diode-connected transistor. For further information on other thermal diodes see applications Diode Non-Ideality.
(3) Quiescent current will not increase substantially with an SMBus communication.
(4) This specification is provided only to indicate how often temperature data is updated. The LM95214 can be read at any time without regard to conversion state (and will yield last conversion result).