ICL7106_14 Datasheet, PDF (11/17 Pages) Intersil Corporation – 31/2 Digit, LCD/LED Display, A/D Converters

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 #
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”
AN046 “Building a Battery-Operated Auto Ranging DVM with the ICL7106”
AN052 “Tips for Using Single Chip 3¹/₂ Digit A/D Converters”
AN9609 “Overcoming Common Mode Range Issues When Using Intersil
Integrating Converters”
Typical Applications
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 PIN 1
100kΩ
100pF
SET V_REF
= 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
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 PIN 1
100kΩ
100pF
SET V_REF
= 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).
FIGURE 11. ICL7106 USING THE INTERNAL REFERENCE
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 12. ICL7107 USING THE INTERNAL REFERENCE
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FN3082.9
October 24, 2014