7106

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

16 of 18

www.unisonic.com.tw

QW-R502-018.E

TYPICAL APPLICATIONS(Cont.)

OSC1

OSC2

OSC3

TEST

REF HI

REF LO

COMMON

IN HI

IN LO

A-Z

BUFF

INT

V-

G2

C3

A3

G3

BP

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

TO PIN1

91kΩ

100pF

0.1µF

0. 47 F

100k

1M

47 k

0. 22 F

SCALE

FACTOR

ADJUST

9V

TO DISPLAY

A sillicon diode- connected transistor has a temperature coefficient of about -2 mV/

Calibration is achieved by placing the sensing transistor in ice water and adjusting

zeroing potentiometer for a 00.0 .

0

reading. The sensor should then be placed in

water and the scale - factor potentiometer adjusted for a 100.0 reading

Fig.9 Used as A Digital Centigrade Thermometer

0.01 F

100k

220k

22k

ZERO

ADJUST

SILICON NPN

MPS 3704OR

SIMILAR

TO BACKPLANE

µ

µ

µ

Ω

Ω

Ω

Ω

Ω

Ω

.

the

boiling