ICL7107R INTERSIL [Intersil Corporation], ICL7107R Datasheet - Page 14

• Manufacturer Part Number: ICL7107R
• Description: 3 1/2 Digit, LCD/LED Display, A/D Converters
• Manufacturer: INTERSIL [Intersil Corporation]

Typical Applications
COMMON
REF LO
REF HI
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
C
C
IN HI
REF
REF
A-Z
INT
BP
G2
G3
V -
C3
A3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Test is used as a common-mode reference level to ensure compatibility with most op amps.
TO DISPLAY
TO PIN 1
100kΩ
14
100pF
(Continued)
0.1µF
FIGURE 22. DISPLAY BUFFERING FOR INCREASED DRIVE CURRENT
47kΩ
0.47µF
0.22µF
TO BACKPLANE
+5V
1kΩ
FIGURE 21. AC TO DC CONVERTER WITH ICL7106
ICL7106, ICL7107, ICL7107S
10µF
ICL7107
10µF
22kΩ
+
-
9V
SCALE FACTOR ADJUST
(V
REF
1µF
DM7407
(FOR OPTIMUM BANDWIDTH)
= 100mV FOR AC TO RMS)
4.3kΩ
470kΩ
100pF
10kΩ
130Ω
130Ω
130Ω
SEGMENTS
1µF
LED
1N914
10kΩ
0.22µF
5µF
1µF
CA3140
2.2MΩ
+
-
100kΩ
AC IN
FN3082.7