ICL7136CPLZ Intersil, ICL7136CPLZ Datasheet - Page 12

• Manufacturer Part Number: ICL7136CPLZ
• Description: IC ADC 3.5DIGIT LCD LP 40DIP
• Manufacturer: Intersil

Specifications of ICL7136CPLZ

• Display Type: LCD
• Configuration: 7 Segment
• Digits Or Characters: A/D 3.5 Digits
• Current - Supply: 70µA
• Voltage - Supply: 4 V ~ 6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.600", 15.24mm)
• Package: 40PDIP
• Resolution: 3 1/2 Digit
• Sampling Rate: 3 SPS
• Architecture: Dual Slope
• Number Of Analog Inputs: 1
• Digital Interface Type: LCD
• Input Type: Voltage
• Polarity Of Input Voltage: Bipolar
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -

A silicon diode-connected transistor has a temperature coefficient
of about -2mV/
000.0 reading. The sensor should then be placed in boiling water
and the scale-factor potentiometer adjusted for a 100.0 reading.
†
transistor in ice water and adjusting the zeroing potentiometer for a
FIGURE 10. ICL7136 USED AS A DIGITAL CENTIGRADE
Value depends on clock frequency.
COMMON
REF LO
REF HI
OSC 1
OSC 2
OSC 3
COMMON
IN LO
BUFF
TEST
C
C
IN HI
REF LO
REF
REF
A-Z
INT
REF HI
BP
G2
G3
V -
C3
A3
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
THERMOMETER
C
C
o
IN HI
C. Calibration is achieved by placing the sensing
REF
REF
A-Z
INT
BP
G2
G3
V -
C3
A3
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
0.1µF
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
0.01µF
0.47µF
Test is used as a common-mode reference level to ensure compatibility with most op amps.
TO DISPLAY
†
†
50pF
TO DISPLAY
TO PIN 1
TO PIN 1
390kΩ
0.47µF
180kΩ
0.047µF
12
TO BACKPLANE
50pF
100kΩ 1MΩ
200kΩ 470kΩ
0.1µF
180kΩ
TO BACKPLANE
SCALE
FACTOR
ADJUST
ZERO
ADJUST
20kΩ
FIGURE 12. AC TO DC CONVERTER WITH ICL7136
-
+
9V
22kΩ
10µF
SILICON NPN
MPS 3704 OR
SIMILAR
10µF
220kΩ
+
-
9V
ICL7136
SCALE FACTOR ADJUST
(V
REF
1µF
(FOR OPTIMUM
= 100mV FOR AC TO RMS)
BANDWIDTH)
4.3kΩ
470kΩ
100pF
O /RANGE
U /RANGE
FIGURE 11. CIRCUIT FOR DEVELOPING UNDERRANGE AND
10kΩ
CD4023 OR
74C10
OVERRANGE SIGNAL FROM ICL7136 OUTPUTS
1µF
TO LOGIC
1N914
V
V+
CC
CD4077
10kΩ
0.22µF
5µF
1µF
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
CA3140
2.2MΩ
+
-
COMMON
REF LO
100kΩ
REF HI
OSC 1
OSC 2
OSC 3
IN LO
BUFF
TEST
C
C
IN HI
REF
REF
A-Z
INT
G2
G3
BP
C3
A3
V-
July 21, 2005
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
AC IN
FN3086.6
LOGIC
GND
TO
V-