ICL8052A Datasheet, PDF (13/23 Pages) Intersil Corporation – Precision 4 1/2 Digit, A/D Converter

ICL8052A/ICL71C03, ICL8068A/ICL71C03
5
150Ω
4.7kΩ
150Ω
10kΩ
SIGNAL
INPUT
0.1µF
CLOCK
IN
120kHz = 3
READINGS/SEC
ICL71C03
+5V
1 V+
2 4¹/₂ / 3¹/₂
3 POLARITY
4 RUN/HOLD
5 COMP IN
-15V
6 V-
7 REFERENCE
10µF
8 REF. CAP. 1
9 REF. CAP. 2
10 ANALOG IN
11 ANALOG GND
BUSY 28
(LSD) D₁ 27
D₂ 26
D₃ 25
D₄ 24
(MSB) B₈ 23
B₄ 22
B₂ 21
(LSB) B₁ 20
(MSD) D₅ 19
STROBE 18
12 CLOCK IN
A-Z IN 17
13 UNDER-RANGE A-Z OUT 16
14 OVER-RANGE DIGITAL GND 15
NOTE: For 3¹/₂ digit, tie pin 2 low and change clock to 12kHz.
+5V
4
3
2
1
150Ω
7447
a
b
c
B₁
d ^B2
e ^B3
f B₄
g _RBI
47kΩ
ICL8068A
-15V 1 V-
INT OUT 14
2 COMP OUT +BUFF IN 13
300µF
36
3 REF CAP
+INT IN 12
kΩ
10
kΩ
10µF
300
kΩ
1kΩ
4 REF BYPASS -INT IN 11
5 GND
-BUFF IN 10
6 REF OUT BUFF OUT 9
7 REF SUPPLY
V++ 8
-15V
1.0µF
0.22µF
100
kΩ
90kΩ
10kΩ
+15V
FIGURE 7. ICL8052A (8068A)/71C03A 4¹/₂ DIGIT A/D CONVERTER
POL
+5V
5kΩ
a
a
V+
HI VOLTAGE BUFFER DI 505
DM8880
PROG
g
g
RBI BI D
A
47kΩ
0.02µF
+5V
3kΩ
0V
2.5kΩ
GATES
ARE
7409
0.02
µF _0.02
µF _0.02
µF
0.02
µF
POL D₅ D₄ D₃ D₂ D₁
B₈
8052A/
8068A
71C03A
B₄
B₂
B₁
FIGURE 8. ICL8052A-8068A/71C03A PLASMA DISPLAY CIRCUIT
13