11

FN3082.8

Typical Applications

The ICL7106 and ICL7107 may be used in a wide variety of

configurations. The circuits which follow show some of the

possibilities, and serve to illustrate the exceptional versatility

of these A/D converters.

The following application notes contain very useful

information on understanding and applying this part and are

available from Intersil Corporation.

Application Notes

NOTE #

DESCRIPTION

AN016

“Selecting A/D Converters”

AN017

“The Integrating A/D Converter”

AN018

“Do’s and Don’ts of Applying A/D Converters”

AN023

“Low Cost Digital Panel Meter Designs”

AN032

“Understanding the Auto-Zero and Common Mode

Performance of the ICL7136/7/9 Family”

AN046

“Building a Battery-Operated Auto Ranging DVM with the

ICL7106”

AN052

AN9609

“Overcoming Common Mode Range Issues When Using

Intersil Integrating Converters”

Typical Applications

FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE

FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

OSC 1

OSC 2

OSC 3

TEST

REF HI

REF LO

COMMON

IN HI

IN LO

A-Z

BUFF

INT

V -

G2

C3

A3

G3

BP

100pF

TO PIN 1

= 100mV

0.1

µF

0.01

µF

1M

Ω

100k

Ω

1k

Ω

22k

Ω

IN

+

-

9V

47k

Ω

0.22

µF

0.47

µF

TO BACKPLANE

TO DISPLAY

Values shown are for 200mV full scale, 3 readings/sec., floating

supply voltage (9V battery).

+

-

Values shown are for 200mV full scale, 3 readings/sec. IN LO may

be tied to either COMMON for inputs floating with respect to

supplies, or GND for single ended inputs. (See discussion under

Analog COMMON).

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

OSC 1

OSC 2

OSC 3

TEST

REF HI

REF LO

COMMON

IN HI

IN LO

A-Z

BUFF

INT

V -

G2

C3

A3

G3

GND

100pF

TO PIN 1

= 100mV

0.1

µF

0.01

µF

1M

Ω

100k

Ω

1k

Ω

22k

Ω

IN

+

-

47k

Ω

0.22

µF

0.47

µF

TO DISPLAY

+5V

-5V

ICL7106, ICL7107, ICL7107S