SBOS466B December   2009  – December 2018 TMP20

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Block Diagram
    2.     Device Quiescent Current Over Temperature
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 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 Transfer Function
        1. 7.3.1.1 Example 1
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Drive and Capacitive Loads
    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. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 TINA-TI (Free Download Software)
        1. 11.1.1.1 Using TINA-TI SPICE-Based Analog Simulation Program with the TMP20
      2. 11.1.2 Development Support
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.1.1 Example 1

Determine the linear transfer function for –40°C to +110°C.

TMIN = –40°C; TMAX = 110°C; therefore, T = 35°C

m = –11.77mV/°C

VOUT (110°C) = 0.5520 V

VOUT (35°C) = 1.4566 V

b = 1.8576 V

The linear transfer function for –40°C to +110°C is shown in Equation 6:

Equation 6. TMP20 sbos466a_equation5.gif

Table 1 lists common temperature ranges of interest and the corresponding linear transfer functions for these ranges. Note that the error (maximum deviation) of the linear equation from the parabolic equation increases as the temperature ranges widen.

Table 1. Common Temperature Ranges and Corresponding Linear Transfer Functions

TEMPERATURE RANGE LINEAR EQUATION (V) MAXIMUM DEVIATION OF LINEAR EQUATION FROM PARABOLIC EQUATION (°C)
TMIN (°C) TMAX (°C)
–55 130 VOUT = –11.79 mV/°C × T + 1.8528 ±1.41
–40 110 VOUT = –11.77 mV/°C × T + 1.8577 ±0.93
–30 100 VOUT = –11.77 mV/°C × T + 1.8605 ±0.70
–40 85 VOUT = –11.67 mV/°C × T + 1.8583 ±0.65
–10 65 VOUT = –11.71 mV/°C × T + 1.8641 ±0.23
35 45 VOUT = –11.81 mV/°C × T + 1.8701 ±0.004
20 30 VOUT = –11.69 mV/°C × T + 1.8663 ±0.004