ICL7135_07 INTERSIL [Intersil Corporation], ICL7135_07 Datasheet - Page 4

• Manufacturer Part Number: ICL7135_07
• Manufacturer: INTERSIL [Intersil Corporation]

ANALOG
ANALOG
COMMON
SIGNAL
100kΩ
V
GND
INPUT
REF
IN LO
IN HI
100kΩ
IN
10
3
9
100K
SET V
INT
INT
C
FIGURE 1. ICL7135 TEST CIRCUIT
REF+
0.47μF
AZ
REF
1μF
0.1μF
= 1.000V
+5V
8
-5V
1μF
100kΩ
27Ω
DE(+)
4
DE(-)
REF HI
2
AZ
A/Z, DE(±), ZI
C
10
11
12
13
14
1
2
3
4
5
6
7
8
9
REF
DE(+)
DE(-)
ANALOG GND
V-
REF
INT OUT
A-Z IN
BUF OUT
REF CAP 1
REF CAP 2
IN LO-
IN HI+
V+
MSD D5
LSB B1
B2
FIGURE 3. ANALOG SECTION OF ICL7135
ICL7135
UNDERRANGE
A/Z
DIGITAL GND
OVERRANGE
RUN/HOLD
POLARITY
CLOCK IN
STROBE
V
C
7
MSB B8
LSD DI
REF
-
BUSY
INPUT
HIGH
1
D2
D3
D4
B4
BUFFER
-
+
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ICL7135
ZI
R
INT
0V
CLOCK
IN
120kHz
6
V
11
+
C
AZ
INTEGRATOR
INPUT
LOW
AUTO
ZERO
5
FIGURE 2. ICL7135 DIGITAL LOGIC INPUT
AZ
PAD
COMPARATOR
+
-
INT
4
C
INT
+
DETECTOR
CROSSING
POLARITY
ZERO-
F/F
V
DIG GND
+
FN3093.4