10

TMP20

SBOS466B – DECEMBER 2009 – REVISED DECEMBER 2018

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Feature Description (continued)

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

7.4 Device Functional Modes

The singular functional mode of the TMP20 is an analog output inversely proportional to temperature.