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