ICL8052A Datasheet, PDF (16/23 Pages) Intersil Corporation – Precision 4 1/2 Digit, A/D Converter

ICL8052A/ICL71C03, ICL8068A/ICL71C03
+5V
1_{/2 CD4030}
+5V
ICL71C03(A)
INPUT
-15V
1µF
100kΩ
0.1µF
1 V+
BUSY 28
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
CD4081
CD4071
+5V
1_{/4 CD4030}
36kΩ
300kΩ
-15V
1.0µF
-15V ₁
300µF ²
3
4
5
6
5kΩ
7
ICL8052A
8068A
14
0.22µF
13
12
11
10
100kΩ
9
8
+15V
10kΩ
10µF
4¹/₂ DIGIT LCD DISPLAY
28 SEGMENTS
D₁ - D₄
BACKPLANE
ICM7211A
5 BP
1_{/4 CD4030}
31 D₁
32 D₂
33 D_{3 2, 3, 4}
34 D₄ ^{6 - 26}
37 - 40
CD4071
30 B₃
OPTIONAL
29 B₂
CAPACITOR
OSC 36
+5V
28 B₁
22-100pF
27 B₀
35 V-
0V
V+ 1
+5V
0V 1 V-
V+ 8
+5V
4.7kΩ
2 ICM7555 7
3 OUT
+5V 4 RESET
6
5
10 TO 15kΩ
ADJUST TO
F_CL = 120kHz
300pF
0V
ANALOG GND
FIGURE 11. 4¹/₂ DIGIT LCD DPM WITH DIGIT BLANKING ON OVERRANGE
16