ICL7106, ICL7107, ICL7107S
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 #
AN016
AN017
AN018
AN023
AN032
AN046
AN052
DESCRIPTION
“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
1
/
2
Digit A/D Converters”
AN9609 “Overcoming Common Mode Range Issues When Using
Intersil Integrating Converters”
Typical Applications
TO PIN 1
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
C
REF
34
C
REF
33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
BP 21
TO BACKPLANE
TO DISPLAY
0.22µF
0.01µF
0.47µF
47kΩ
1kΩ
0.1µF
1MΩ
+
IN
22kΩ
100pF
SET V
REF
= 100mV
100kΩ
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
C
REF
34
C
REF
33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
GND 21
TO DISPLAY
0.22µF
-5V
0.01µF
0.47µF
47kΩ
1kΩ
0.1µF
1MΩ
+
IN
22kΩ
+5V
100pF
SET V
REF
= 100mV
100kΩ
TO PIN 1
-
+
9V
-
-
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).
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
11
FN3082.8
INTERSIL [ INTERSIL CORPORATION ]
