IC7135 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
IC7135 Datasheet PDF : 15 Pages
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ICL7135
SET VREF = 1.000V
VREF IN
-5V
100kΩ
ANALOG
GND
100kΩ
0.47µF 27Ω
1µF
100kΩ
SIGNAL
INPUT
1µF
100K
0.1µF
+5V
ICL7135
1 V-
2 REF
UNDERRANGE 28
OVERRANGE 27
3 ANALOG GND STROBE 26
4 INT OUT RUN/HOLD 25
5 A-Z IN DIGITAL GND 24
6 BUF OUT POLARITY 23
7 REF CAP 1 CLOCK IN 22
8 REF CAP 2
BUSY 21
9 IN LO-
LSD DI 20
10 IN HI+
D2 19
11 V+
D3 18
12 MSD D5
D4 17
13 LSB B1
MSB B8 16
14 B2
B4 15
0V
CLOCK
IN
120kHz
FIGURE 1. ICL7135 TEST CIRCUIT
V+
PAD
DIG GND
FIGURE 2. ICL7135 DIGITAL LOGIC INPUT
CREF+
8
CREF
REF HI
2
RINT
CREF BUFFER
7
6
CAZ
V+
11
AUTO
ZERO
5
CINT
INT
4
IN HI
10
INT
AZ
3
ANALOG
COMMON
INT
9
IN LO
AZ
DE(-) DE(+)
A/Z
-
+
INPUT
HIGH
ZI
DE(+) DE(-)
A/Z, DE(±), ZI
1
V-
INTEGRATOR
-
+
+
AZ
COMPARATOR
INPUT
LOW
FIGURE 3. ANALOG SECTION OF ICL7135
ZERO-
CROSSING
DETECTOR
POLARITY
F/F
4
FN3093.3
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