ICL8052A Datasheet, PDF (15/23 Pages) Intersil Corporation – Precision 4 1/2 Digit, A/D Converter

ICL8052A/ICL71C03, ICL8068A/ICL71C03
+5V
116 15 14 12 5 3 4
CD4054A
7 8 13 11 10 9 2 6
0V
INPUT
+5V
1 V+
ICL71C03
BUSY 28
-15V
1µF
100kΩ
0.1µF
2 41/2 / 31/2
D₁ 27
3 POL
D₂ 26
4 R/H
D₃ 25
5 COMP IN
D₄ 24
6 V-
B₈ 23
7 REF
B₄ 22
8 REF. CAP. 1
B₂ 21
9 REF. CAP. 2
B₁ 20
10 INPUT
D₅ 19
11 ANALOG GND STROBE 18
12 CLOCK
A-Z IN 17
13 UR
A-Z OUT 16
14 OR
DIG GND 15
0V
4¹/₂ DIGIT LCD DISPLAY
28 SEGMENTS
D₁ - D₄
BACKPLANE
ICM7211A
5 BP
31 D₁
32 D₂
33 D₃
34 D₄
2, 3, 4
6 - 26
37 - 40
30 B₃
29 B₂
OPTIONAL
CAPACITOR
28 B₁ ^{OSC 36}
+5V
27 B₀
22-100pF
35 V-
0V
V+ 1
+5V
CLOCK IN (120kHz = 3 READINGS/SEC)
1.0µF
36kΩ
300kΩ
-15V
-15V ₁
2
300µF
3
4
5
6
5kΩ
7
ICL8052A
8068A
14
0.22µF
13
12
11
10
100kΩ
9
8
+15V
10kΩ
10µF
ANALOG GND
FIGURE 10. DRIVING LCD DISPLAYS
15