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.
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”
The following application notes contain very useful information
on understanding and applying this part and are available from
Intersil Corporation.
AN046 “Building a Battery-Operated Auto Ranging DVM with the ICL7106”
1
AN052 “Tips for Using Single Chip 3 / Digit A/D Converters”
2
AN9609 “Overcoming Common Mode Range Issues When Using Intersil
Integrating Converters”
Typical Applications
TO PIN 1
TO PIN 1
OSC 1 40
100kΩ
OSC 2 39
OSC 1 40
100kΩ
OSC 2 39
OSC 3 38
SET V
OSC 3 38
SET V
REF
REF
100pF
100pF
TEST 37
REF HI 36
REF LO 35
= 100mV
TEST 37
REF HI 36
REF LO 35
= 100mV
+5V
1kΩ
22kΩ
1MΩ
1kΩ
22kΩ
1MΩ
C
C
34
33
C
C
34
33
REF
REF
REF
REF
0.1µF
0.1µF
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
+
+
IN
IN
0.01µF
0.01µF
0.47µF
47kΩ
0.47µF
47kΩ
-
+
-
9V
-
0.22µF
0.22µF
-5V
V - 26
G2 25
G2 25
C3 24
C3 24
TO DISPLAY
TO DISPLAY
A3 23
A3 23
G3 22
G3 22
BP 21
GND 21
TO BACKPLANE
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.)
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
FN3082 Rev 9.00
October 24, 2014
Page 11 of 17
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