ICL7106, ICL7107, ICL7106S, ICL7107S
Typical Applications
Application Notes
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.
NOTE #
DESCRIPTION
AN016 “Selecting A/D Converters”
AN017 “The Integrating A/D Converter”
AN018 “Do’s and Don’ts of Applying A/D
Converters”
AnswerFAX
DOC. #
9016
9017
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”
AN052 “Tips for Using Single Chip 31/2 Digit A/D
Converters”
9046
9052
Typical Applications
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
CREF 34
CREF 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 PIN 1
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
0.22µF
+
IN
-
+
9V
-
TO DISPLAY
TO BACKPLANE
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
REF LO 35
CREF 34
CREF 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 PIN 1
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
+5V
+
IN
-
0.22µF
-5V
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.)
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
FIGURE 12. ICL7107 USING THE INTERNAL REFERENCE
11