ICL7135CPI Intersil, ICL7135CPI Datasheet - Page 11

• Manufacturer Part Number: ICL7135CPI
• Description: IC CONV A/D 4 1/2 DIGIT 28-DIP
• Manufacturer: Intersil

Specifications of ICL7135CPI

• Rohs Status: RoHS non-compliant
• Other names: ICL7135CPIIS; NT5015

ANALOG
INPUT
GND
100kΩ
100kΩ
0.22μF
0.1μF
REF
VOLTAGE
FIGURE 11. LM311 CLOCK SOURCE
27Ω
100kΩ
-5V
1μF
+5V
0.47μF
16kΩ
16kΩ
1μF
10
11
12
13
14
2
3
1
2
3
4
5
6
7
8
9
11
LM311
V-
REF
ANALOG
COMMON
INT OUT
AZ
BUF OUT
RC1
RC2
INPUT LO
INPUT HI
V+
D5
B1
B2
+
-
IN
8
4
56kΩ
ICL7135
1
7
DIG. GND
STROBE
CLOCK
BUSY
+5V
1kΩ
30kΩ
390pF
POL
R/H
UR
OR
FIGURE 10. DRIVING LCD DISPLAYS
D1
D2
D3
D4
B8
B4
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+5V
ICL7135
1
7 8 13 1110 9 2 6
16 15 1412 5 3 4
CD4054A
FIGURE 12. GENERATING A NEGATIVE SUPPLY FROM +5V
120kC = 3 READINGS/SEC
10μF
+
-
CLOCK IN
4
1
/
2
DIGIT LCD DISPLAY
1
2
3
4
300pF
ICL7660
0V
5BP
31 D1
32 D2
33 D3
34 D4
30 B3
29 B2
28 B1
27 B0
35 V-
BACKPLANE
8
7
6
5
ICM7211A
10μF
OSC 36
37-40
28 SEGMENTS D1-D4
6-26
2,3,4
V+ 1
+5V
+
-
CAPACITOR
OPTIONAL
22-100pF
V
+5V
OUT
= -5V
FN3093.4
+5V