ICL7107R INTERSIL [Intersil Corporation], ICL7107R Datasheet - Page 11

• Manufacturer Part Number: ICL7107R
• Description: 3 1/2 Digit, LCD/LED Display, A/D Converters
• Manufacturer: INTERSIL [Intersil Corporation]

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.
Typical Applications
Values shown are for 200mV full scale, 3 readings/sec., floating
supply voltage (9V battery).
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
COMMON
REF LO
REF HI
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
C
C
IN HI
REF
REF
A-Z
INT
BP
V -
G2
C3
A3
G3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
TO DISPLAY
0.47µF
100kΩ
0.22µF
100pF
11
0.1µF
47kΩ
TO BACKPLANE
TO PIN 1
1kΩ
0.01µF
SET V
= 100mV
22kΩ
1MΩ
ICL7106, ICL7107, ICL7107S
REF
-
+
+
-
9V
IN
Application Notes
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).
AN016
AN017
AN018
AN023
AN032
AN046
AN052
AN9609 “Overcoming Common Mode Range Issues When Using
NOTE #
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
COMMON
“Selecting A/D Converters”
“The Integrating A/D Converter”
“Do’s and Don’ts of Applying A/D Converters”
“Low Cost Digital Panel Meter Designs”
“Understanding the Auto-Zero and Common Mode
Performance of the ICL7136/7/9 Family”
“Building a Battery-Operated Auto Ranging DVM with the
ICL7106”
“Tips for Using Single Chip 3
Intersil Integrating Converters”
REF LO
REF HI
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
C
C
IN HI
GND
REF
REF
A-Z
INT
V -
G2
C3
A3
G3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
TO DISPLAY
0.47µF
0.22µF
DESCRIPTION
100kΩ
100pF
0.1µF
47kΩ
TO PIN 1
1
/
2
1kΩ
Digit A/D Converters”
0.01µF
SET V
= 100mV
22kΩ
1MΩ
REF
+
-
FN3082.7
+5V
IN
-5V