6

O

6

(1.8639

V

2.1962 10

3.88 10

)

T

1481.96





u



u





LMT89

www.ti.com

SNIS176A – MARCH 2013 – REVISED JANUARY 2015

Feature Description (continued)

Table 1. Temperature to Voltage Output Characteristic Table

TEMP

VOUT

TEMP

VOUT

TEMP

VOUT

TEMP

VOUT

TEMP

VOUT

TEMP

VOUT

TEMP

VOUT

(°C)

(V)

(°C)

(V)

(°C)

(V)

(°C)

(V)

(°C)

(V)

(°C)

(V)

(°C)

(V)

–55

2.4847

–28

2.1829

–1

1.8754

26

1.5623

53

1.2435

80

0.9191

107

0.5890

–54

2.4736

–27

2.1716

0

1.8639

27

1.5506

54

1.2316

81

0.9069

108

0.5766

–53

2.4625

–26

2.1603

1

1.8524

28

1.5389

55

1.2197

82

0.8948

109

0.5643

–52

2.4514

–25

2.1490

2

1.8409

29

1.5271

56

1.2077

83

0.8827

110

0.5520

–51

2.4403

–24

2.1377

3

1.8294

30

1.5154

57

1.1958

84

0.8705

111

0.5396

–50

2.4292

–23

2.1263

4

1.8178

31

1.5037

58

1.1838

85

0.8584

112

0.5272

–49

2.4181

–22

2.1150

5

1.8063

32

1.4919

59

1.1719

86

0.8462

113

0.5149

–48

2.4070

–21

2.1037

6

1.7948

33

1.4802

60

1.1599

87

0.8340

114

0.5025

–47

2.3958

–20

2.0923

7

1.7832

34

1.4684

61

1.1480

88

0.8219

115

0.4901

–46

2.3847

–19

2.0810

8

1.7717

35

1.4566

62

1.1360

89

0.8097

116

0.4777

–45

2.3735

–18

2.0696

9

1.7601

36

1.4449

63

1.1240

90

0.7975

117

0.4653

–44

2.3624

–17

2.0583

10

1.7485

37

1.4331

64

1.1120

91

0.7853

118

0.4529

–43

2.3512

–16

2.0469

11

1.7369

38

1.4213

65

1.1000

92

0.7731

119

0.4405

–42

2.3401

–15

2.0355

12

1.7253

39

1.4095

66

1.0880

93

0.7608

120

0.4280

–41

2.3289

–14

2.0241

13

1.7137

40

1.3977

67

1.0760

94

0.7486

121

0.4156

–40

2.3177

–13

2.0127

14

1.7021

41

1.3859

68

1.0640

95

0.7364

122

0.4032

–39

2.3065

–12

2.0013

15

1.6905

42

1.3741

69

1.0519

96

0.7241

123

0.3907

–38

2.2953

–11

1.9899

16

1.6789

43

1.3622

70

1.0399

97

0.7119

124

0.3782

–37

2.2841

–10

1.9785

17

1.6673

44

1.3504

71

1.0278

98

0.6996

125

0.3658

–36

2.2729

–9

1.9671

18

1.6556

45

1.3385

72

1.0158

99

0.6874

126

0.3533

–35

2.2616

–8

1.9557

19

1.6440

46

1.3267

73

1.0037

100

0.6751

127

0.3408

–34

2.2504

–7

1.9442

20

1.6323

47

1.3148

74

0.9917

101

0.6628

128

0.3283

–33

2.2392

–6

1.9328

21

1.6207

48

1.3030

75

0.9796

102

0.6505

129

0.3158

–32

2.2279

–5

1.9213

22

1.6090

49

1.2911

76

0.9675

103

0.6382

130

0.3033

–31

2.2167

–4

1.9098

23

1.5973

50

1.2792

77

0.9554

104

0.6259

—

—

–30

2.2054

–3

1.8984

24

1.5857

51

1.2673

78

0.9433

105

0.6136

—

—

–29

2.1941

–2

1.8869

25

1.5740

52

1.2554

79

0.9312

106

0.6013

—

—

Solving Equation 2 for T:

(3)

For other methods of calculating T, see Detailed Design Procedure.

7.4 Device Functional Modes

The only functional mode of the LMT89 device is that it has an analog output inversely proportional to

temperature.

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