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

ICL8052A/ICL71C03, ICL8068A/ICL71C03
Functional Block Diagram
10kΩ
90kΩ
100kΩ 0.22µF
+15V -15V
-BUF IN BUF OUT -INT IN INT OUT
10kΩ
10µF
REF
OUT
87
6
INT.
3 _REF.
300pF
1kΩ ⁵
1 10
9
11
14
BUFFER
INTEG.
COMP.
-
-
A1
A2
-
+
+
A3
ICL8052A/8068A
+
-1.2V
+BUF IN 13 ^{+INT IN 12}
2
10µF (TYP)
COMP
1µF (TYP) ^OUT
REF
CAP 1
REF
CAP 2
AZ OUT
AZ IN COMP IN
REF
8
7
ANALOG
INPUT
4
5
10kΩ
10
0.1µF
1
9
2
6
16
SW3
17
5
ZERO
CROSSING
DETECTOR
ANALOG
11
GND
ICL71C03
1
15
6
4
RUN/
+5V
-15V
HOLD
SEVEN-
SEGMENT
DECODER
D₅
3 19
MSD
D₄
D₃
D₂
24
25
26
MULTIPLEXER
D₁
27
LSD
20 ^B1
21 B₂
22 B₃
23 B₄
LATCH
LATCH
LATCH
LATCH
LATCH
COUNTERS
CONTROL LOGIC
12
2
14
13
18
28
CLOCK 4 1/2 DIGIT/ OVER UNDER STROBE BUSY
IN _{3 1/2 DIGIT} RANGE RANGE
FIGURE 1.
2