TMP12_15 datasheet(4/12 Pages) AD

部件名	TMP12

功能描述	Airflow and Temperature Sensor

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制造商	AD [Analog Devices]

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REV. B

TMP12

–4–

–Typical Performance Characteristics

HEATER RESISTOR POWER

DISSIPATION (mW)

35

0

30

25

20

15

10

5

0

50

100

150

200

250

V+ = 5V

SOIC-8 SOLDERED TO

0.5

0.3 CU PCB

0 FPM

250 FPM

600 FPM

AIR FLOW RATES

450 FPM

TPC 1. SOIC Junction Temperature

Rise vs. Heater Dissipation

TIME (sec)

120

0

110

100

90

80

70

60

50

40

30

20

10

0

24

6

8

10 12

14

16 18

20

TRANSITION FROM STILL 25 C

AIR TO STIRRED 100 C BATH

V+ = 5V, NO LEAD, HEATER OFF

SOIC-8 SOLDERED TO 0.5

0.3 CU PCB

SOIC AND PCB

TPC 4. Thermal Response Time in

Stirred Oil Bath

TEMPERATURE ( C)

5.0

–75

4.5

4.0

3.5

–25

25

75

125

175

3.0

START-UP VOLTAGE DEFINED AS

OUTPUT READING BEING WITHIN

C OF OUTPUT AT 5V

NO LEAD, HEATER OFF

TPC 7. Start-Up Voltage vs.

Temperature

TIME (sec)

70

0

65

60

55

50

45

40

35

30

25

20

15

10

5

0

10 20 30 40 50 60 70 80 90 100 110120 130

SOIC-8, HTR @ 5V

SOIC-8, HTR @ 3V

V+ = 5V RHEATER TO EXTERNAL

SUPPLY TURNED ON @

t = 5 sec

SOIC-8 SOLDERED TO 0.5

0.3

COPPER PCB

TPC 2. Junction Temperature Rise in

Still Air

TEMPERATURE ( C)

102.0

–75

101.5

101.0

100.5

100.0

99.5

99.0

98.5

98.0

–25

25

75

125

175

V+ = 5V

TPC 5. Heater Resistance vs.

Temperature

TEMPERATURE ( C)

500

–75

475

450

425

400

375

350

325

300

–25

25

75

125

175

V+ = 5V

NO LEAD

HEATER OFF

TPC 8. Supply Current vs.

Temperature

AIR VELOCITY (FPM)

140

0

130

120

110

100

90

80

70

60

50

40

30

20

10

0

100

200

300

400

500

600

700

TRANSITION FROM 100 C STIRRED

BATH TO FORCED 25 C AIR

V+ = 5V, NO LEAD, HEATER OFF

SOIC-8 SOLDERED TO 0.5

0.3 CU PCB

SOIC AND PCB

TPC 3. Package Thermal Time

Constant in Forced Air

TEMPERATURE ( C)

2.520

–75

2.515

2.510

2.505

2.500

2.495

2.490

–25

25

75

125

175

V+ = 5V

NO LOAD

HEATER OFF

TPC 6. Reference Voltage vs.

Temperature

TEMPERATURE ( C)

6

–50

5

4

3

2

1

0

–1

–2

–3

–4

–5

–6

–25

0

25

50

75

100

125

MAXIMUM LIMIT

ACCURACY ERROR

MINIMUM LIMIT

TPC 9. Accuracy Error vs.

Temperature

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