TMP421 datasheet(6/30 Pages) TI

Part #	TMP421

Description	짹1째C Remote and Local TEMPERATURE SENSOR in SOT23-8

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Manufacturer	TI [Texas Instruments]

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TYPICAL CHARACTERISTICS

3

2

1

0

-1

-2

-3

AmbientTemperature,T ( C)

°

A

-50

-25

125

100

75

50

25

0

V =3.3V

S

T

=+25 C

REMOTE

°

30TypicalUnitsShown

h =1.008

AmbientTemperature,T (

A

°C)

3

2

1

0

-1

-2

-3

-50

125

-25

0

25

50

75

100

50UnitsShown

V =3.3V

S

60

40

20

0

-20

-40

-60

LeakageResistance(M

)

W

0

5

10

15

20

25

30

R

GND

-

R

V

- S

R

W

(

)

S

2.0

1.5

1.0

0.5

0

-0.5

-1.0

-1.5

-2.0

0

3500

500

1000

1500

2000

2500

3000

V =2.7V

S

V =5.5V

S

3

2

1

0

-1

-2

-3

Capacitance(nF)

0

0.5

1.0

1.5

2.0

2.5

3.0

R ( W)

S

2.0

1.5

1.0

0.5

0

-0.5

-1.0

-1.5

-2.0

0

3500

500

1000

1500

2000

2500

3000

V =2.7V

S

V =5.5V

S

TMP421

TMP422

TMP423

SBOS398B – JULY 2007 – REVISED MARCH 2008

At TA = +25°C and VS = +5.0V, unless otherwise noted.

REMOTE TEMPERATURE ERROR

LOCAL TEMPERATURE ERROR

vs TEMPERATURE

Figure 1.

Figure 2.

REMOTE TEMPERATURE ERROR

REMOTE TEMPERATURE ERROR vs SERIES RESISTANCE

vs LEAKAGE RESISTANCE

(Diode-Connected Transistor, 2N3906 PNP)

Figure 3.

Figure 4.

REMOTE TEMPERATURE ERROR vs SERIES RESISTANCE

REMOTE TEMPERATURE ERROR

(GND Collector-Connected Transistor, 2N3906 PNP)

vs DIFFERENTIAL CAPACITANCE

Figure 5.

Figure 6.

6

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