ICL-7107 Intersil, ICL-7107 Datasheet - Page 11

• Manufacturer Part Number: ICL-7107
• Description: 31/2 Digit/ LCD/LED Display/ A/D Converters
• Manufacturer: Intersil

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
G2
G3
V -
C3
A3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
TO DISPLAY
0.47 F
0.22 F
100k
100pF
0.1 F
47k
TO BACKPLANE
ICL7106, ICL7107, ICL7106S, ICL7107S
TO PIN 1
1k
0.01 F
SET V
= 100mV
22k
1M
REF
+
-
+
-
9V
IN
11
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
NOTE #
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
“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
Converters”
COMMON
REF LO
REF HI
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
C
C
IN HI
GND
REF
REF
A-Z
INT
G2
G3
V -
C3
A3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
DESCRIPTION
TO DISPLAY
0.47 F
0.22 F
100k
100pF
0.1 F
47k
TO PIN 1
1
/
2
1k
Digit A/D
0.01 F
SET V
= 100mV
22k
1M
REF
AnswerFAX
DOC. #
9016
9017
9018
9023
9032
9046
9052
+
-
+5V
IN
-5V