TC7107ACKW Ver la hoja de datos (PDF) - Microchip Technology

Número de pieza

componentes Descripción

Fabricante

TC7107ACKW

3-1/2 Digit Analog-to-Digital Converters

Microchip Technology 

TC7106/A/TC7107/A

+ 9V

5.6 kΩ

160 kΩ

1N914 R1

20 kΩ

0.7%/×C

PTC

R3

R2

20 kΩ

V+

V-

VIN-

VIN+

TC7106A

VREF+

VREF-

Common

FIGURE 10-4:

Positive Temperature

Coefficient Resistor Temperature Sensor.

To Pin 1

40

39

38

37

36

35

34

33

TC7106A

32

31

30

29

28

27

26

25

24

23

22

21

Set VREF = 100 mV

100 kΩ

100 pF

0.1 µF 1 kΩ

22 kΩ

1MΩ

+

0.47 µF

0.22 µF

0.01 µF

47 kΩ

IN

+–

9V

–

To Display

To Backplane

FIGURE 10-5:

TC7106A, Using the Internal

Reference: 200 mV Full Scale, 3 Readings-Per-

Second (RPS).

To Pin 1

40

39

38

37

36

35

34

33

TC7107A 32

31

30

29

28

27

26

25

24

23

22

21

Set VREF = 100 mV

100 kΩ

100 pF

0.1 µF 1 kΩ

22 kΩ

1 MΩ

0.47 µF

0.01 µF

47 kΩ

0.22µF

+5V

+

IN

–

-5V

To Display

FIGURE 10-6:

TC7107 Internal Reference:

200 mV Full Scale, 3RPS, VIN- Tied to GND for

Single Ended Inputs.

V+

To Logic

VCC

1

40

To Logic

TC7106A VCC

O/R

U/R

CD4023

OR 74C10

V-

20

21

CD4077 O/R = Over Range

U/R = Under Range

FIGURE 10-7:

Circuit for Developing Under

Range and Over Range Signals from TC7106A

Outputs.

© 2008 Microchip Technology Inc.

DS21455D-page 21

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