ICL7116, ICL7117
Application Notes
Typical Applications
The ICL7116 and ICL7117 may be used in a wide variety of
configurations. The circuits which follow show some of the
possibilities, and serve to illustrate the exceptional versatil-
ity of these A/D converters.
AnswerFAX
DOC. #
NOTE #
DESCRIPTION
AN016 “Selecting A/D Converters”
AN017 “The Integrating A/D Converter”
9016
9017
9018
The following application notes contain very useful
information on understanding and applying this part and
are available from Intersil Corporation.
AN018 “Do’s and Don’ts of Applying A/D
Converters”
AN023 “Low Cost Digital Panel Meter Designs”
9023
9032
AN032 “Understanding the Auto-Zero and
Common Mode Performance of the
ICL7136/7/9 Family”
AN046 “Building a Battery-Operated Auto
Ranging DVM with the ICL7106”
9046
9047
9052
AN047 “Games People Play with Intersil’ A/D
Converters,” edited by Peter Bradshaw
1
AN052 “Tips for Using Single Chip 3 / Digit A/D
2
Converters”
Typical Applications
OSC 1 40
OSC 1 40
100kΩ
100kΩ
OSC 2 39
OSC 2 39
OSC 3 38
SET V
OSC 3 38
SET V
REF
REF
100pF
100pF
TEST 37
REF HI 36
V+ 35
= 100mV
TEST 37
REF HI 36
V+ 35
= 100mV
+5V
1kΩ
22kΩ
1MΩ
1kΩ
22kΩ
1MΩ
C
C
34
33
C
34
33
REF
REF
REF
REF
0.1µF
0.1µF
C
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
+
+
IN
0.01µF
IN
0.01µF
0.47µF
0.47µF
47kΩ
-
-
+
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
GND 21
BP 21
TO BACKPLANE
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.)
Values shown are for 200mV full scale, 3 readings/sec., floating
supply voltage (9V battery).
FIGURE 11. ICL7116 USING THE INTERNAL REFERENCE
FIGURE 12. ICL7117 USING THE INTERNAL REFERENCE
11
INTERSIL [ Intersil ]
