Data Sheet

11
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 Harris Semiconductor.
Application Notes
NOTE # DESCRIPTION
AnswerFAX
DOC. #
AN016 “Selecting A/D Converters” 9016
AN017 “The Integrating A/D Converter” 9017
AN018 “Do’s and Don’ts of Applying A/D
Converters”
9018
AN023 “Low Cost Digital Panel Meter Designs” 9023
AN032 “Understanding the Auto-Zero and
Common Mode Performance of the
ICL7136/7/9 Family”
9032
AN046 “Building a Battery-Operated Auto
Ranging DVM with the ICL7106”
9046
AN052 “Tips for Using Single Chip 3
1
/
2
Digit A/D
Converters”
9052
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
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
BP
100pF
TO PIN 1
SET V
REF
= 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 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
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
GND
100pF
TO PIN 1
SET V
REF
= 100mV
0.1µF
0.01µF
1MΩ
100kΩ
1kΩ 22kΩ
IN
+
-
47kΩ
0.22µF
0.47µF
TO DISPLAY
+5V
-5V
ICL7106, ICL7107, ICL7106S, ICL7107S