TMP421-Q1 datasheet(8/38 Pages) TI1

Part #	TMP421-Q1

Description	Remote and Local Temperature Sensor

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Manufacturer	TI1 [Texas Instruments]

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8 / 38 page

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

V+=5.5V

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

V+=5.5V

60

40

20

0

-20

-40

-60

LeakageResistance(M )

W

0

5

10

15

20

25

30

R

GND

-

R

V+

-

AmbientTemperature,T (

A °C)

3

2

1

0

-1

-2

-3

-50

125

-25

0

25

50

75

100

50UnitsShown

V+=3.3V

3

2

1

0

-

1

-

2

-

3

AmbientTemperature,T ( C)

°

A

-

50

-

25

125

100

75

50

25

0

V+=3.3V

T

=+25 C

REMOTE

°

30TypicalUnitsShown

h

=1.008

8

TMP421-Q1, TMP422-Q1, TMP423-Q1

SBOS821 – NOVEMBER 2016

www.ti.com

Product Folder Links: TMP421-Q1 TMP422-Q1 TMP423-Q1

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7.7 Typical Characteristics

at TA = 25°C and V+ = 5 V (unless otherwise noted)

Figure 2. Remote Temperature Error vs Temperature

Figure 3. Local Temperature Error vs Temperature

Figure 4. Remote Temperature Error vs Leakage Resistance

Figure 5. Remote Temperature Error vs Series Resistance

(Diode-Connected Transistor, 2N3906 PNP)

Figure 6. Remote Temperature Error vs Series Resistance

(GND Collector-Connected Transistor, 2N3906 PNP)

Figure 7. Remote Temperature Error vs Differential

Capacitance

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