ICL-7107 Intersil, ICL-7107 Datasheet - Page 14

• Manufacturer Part Number: ICL-7107
• Description: 31/2 Digit/ LCD/LED Display/ A/D Converters
• Manufacturer: Intersil

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
100k
100pF
0.1 F
FIGURE 22. DISPLAY BUFFERING FOR INCREASED DRIVE CURRENT
47k
0.47 F
0.22 F
(Continued)
TO BACKPLANE
ICL7106, ICL7107, ICL7106S, ICL7107S
+5V
1k
FIGURE 21. AC TO DC CONVERTER WITH ICL7106
10 F
ICL7107
10 F
22k
+
-
9V
SCALE FACTOR ADJUST
(V
REF
14
1 F
DM7407
(FOR OPTIMUM BANDWIDTH)
= 100mV FOR AC TO RMS)
4.3k
470k
100pF
10k
130
130
130
SEGMENTS
1 F
LED
1N914
10k
0.22 F
5 F
1 F
CA3140
2.2M
+
-
100k
AC IN