ICL7106, ICL7107, ICL7107S

FN3082 Rev 9.00

Page 11 of 17

October 24, 2014

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”

AN046 “Building a Battery-Operated Auto Ranging DVM with the ICL7106”

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

0.1µF

0.01µF

1MΩ

100kΩ

1kΩ

22kΩ

IN

+

-

9V

47kΩ

0.22µF

0.47µF

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 in “Analog COMMON” on

page 7.)

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

0.1µF

0.01µF

1MΩ

100kΩ

1kΩ

22kΩ

IN

+

-

47kΩ

0.22µF

0.47µF

TO DISPLAY

+5V

-5V