SBOS473J March   2009  – February 2024 TMP112

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Handling 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 Timing Diagrams
    8. 6.8 Typical Characteristics (TMP112A/B/N)
    9. 6.9 Typical Characteristics (TMP112Dx)
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Digital Temperature Output
      2. 7.3.2 Serial Interface
        1. 7.3.2.1 Bus Overview
        2. 7.3.2.2 Serial Bus Address
        3. 7.3.2.3 Writing and Reading Operation
        4. 7.3.2.4 Slave Mode Operations
          1. 7.3.2.4.1 Slave Receiver Mode
          2. 7.3.2.4.2 Slave Transmitter Mode
        5. 7.3.2.5 SMBus Alert Function
        6. 7.3.2.6 General Call
        7. 7.3.2.7 High-Speed (Hs) Mode
        8. 7.3.2.8 Timeout Function
        9. 7.3.2.9 Timing Diagrams
          1. 7.3.2.9.1 Two-Wire Timing Diagrams
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous-Conversion Mode
      2. 7.4.2 Extended Mode (EM)
      3. 7.4.3 One-Shot/Conversion Ready Mode (OS)
      4. 7.4.4 Thermostat Mode (TM)
        1. 7.4.4.1 Comparator Mode (TM = 0)
        2. 7.4.4.2 Interrupt Mode (TM = 1)
    5. 7.5 Programming
      1. 7.5.1 Pointer Register
      2. 7.5.2 Temperature Register
      3. 7.5.3 Configuration Register
        1. 7.5.3.1 Shutdown Mode (SD)
        2. 7.5.3.2 Thermostat Mode (TM)
        3. 7.5.3.3 Polarity (POL)
        4. 7.5.3.4 Fault Queue (F1/F0)
        5. 7.5.3.5 Converter Resolution (R1 and R0)
        6. 7.5.3.6 One-Shot (OS)
        7. 7.5.3.7 Extended Mode (EM)
        8. 7.5.3.8 Alert (AL)
      4. 7.5.4 High- and Low-Limit Register
  9. 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
      4. 8.2.4 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Overview

The TMP112 family of devices are digital temperature sensors that are designed for thermal-management and thermal-protection applications. The TMP112 family is two-wire, SMBus, and I2C interface-compatible. The device is specified over an operating temperature range of –40°C to 125°C. Figure 7-1 and Figure 7-2 show block diagrams of the TMP112 family. Figure 7-3 shows the ESD protection circuitries contained in the TMP112 family.

The temperature sensor in the TMP112 family is the chip itself. Thermal paths run through the package leads as well as the plastic package. The package leads provide the primary thermal path because of the lower thermal resistance of the metal.

An alternative version of the TMP112 family is available. The TMP102 device has reduced accuracy, the same micro-package, and is pin-to-pin compatible.

Table 7-1 Advantages of TMP112 Family Versus TMP102 and TMP110
DEVICE COMPATIBLE INTERFACESPACKAGESUPPLY CURRENT (Typ)SUPPLY VOLTAGE (MIN)SUPPLY VOLTAGE (MAX)RESOLUTIONLOCAL SENSOR ACCURACY (MAX)SPECIFIED CALIBRATION DRIFT SLOPE
TMP112A/B/NI2C
SMBus 		SOT563
1.6 × 1.6 × 0.6 		7µA
(at 4-Hz)
3.2µA
(at 1-Hz)		1.4 V3.6 V12 Bit
0.0625°C		±0.5°C: (0°C to 65°C)
±1°C: (-40°C to 125°C)		Yes
TMP112DxI2C
SMBus 		X2SON
0.8 × 0.8 × 0.4		3.2µA
(at 1-Hz)		1.4 V3.6 V12 Bit
0.0625°C		±0.5°C: (-25°C to 85°C)
±1°C: (-40°C to 125°C)		Yes
TMP110I2C
SMBus 		X2SON
0.8 × 0.8 × 0.4		3.2µA
(at 1-Hz)		1.14 V5.5 V12 Bit
0.0625°C		 ±1°C: (-40°C to 125°C)Yes
TMP102I2C
SMBus 		SOT563
1.6 × 1.6 × 0.6 		7µA
(at 4-Hz)		1.4 V3.6 V12 Bit
0.0625°C		±2°C: (25°C to 85°C)
±3°C: (-40°C to 125°C)		No