参数资料
型号: ICL7126CPLZ
厂商: Intersil
文件页数: 12/15页
文件大小: 0K
描述: IC ADC 3.5DIGIT LCD LP 40DIP
标准包装: 9
显示器类型: LCD
配置: 7 段显示
数字或字符: A/D,3.5 位数字
电流 - 电源: 70µA
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 40-DIP(0.600",15.24mm)
供应商设备封装: 40-DIP
包装: 管件
产品目录页面: 1236 (CN2011-ZH PDF)
ICL7126
Typical Applications
(Continued)
V+
OSC 1 40
OSC 2 39
?
OSC 1 40
OSC 2 39
?
OSC 3 38
TEST 37
50pF
SET V REF
= 100mV
OSC 3 38
TEST 37
50pF
REF HI 36
REF HI 36
V+ 35
C REF 34
C REF 33
COMMON 32
0.1 μ F
20k ? 100k ? 27k ?
1.2V (ICL8069)
1M ?
+
+5V
V+ 35
C REF 34
C REF 33
COMMON 32
IN HI 31
0.1 μ F
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
0.33 μ F
180k ?
?
0.01 μ F
-
IN
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
0.33 μ F
R INT
?
G2 25
C3 24
A3 23
G3 22
GND 21
TO DISPLAY
TO BACK PLANE
C3 24
A3 23
G3 22
GND 21
TO DISPLAY
TO BACK PLANE
An external reference must be used in this application, since the
voltage between V+ and V- is insufficient for correct operation of the
internal reference. ? indicates values depend on clock frequency.
FIGURE 14. ICL7126 OPERATED FROM SINGLE +5V SUPPLY
The resistor values within the bridge are determined by the desired
sensitivity. ? indicates values depend on clock frequency.
FIGURE 15. ICL7126 MEASURING RATIOMETRIC VALUES OF
QUAD LOAD CELL
OSC 1 40
OSC 2 39
?
OSC 3 38
TEST 37
REF HI 36
50pF
SCALE
FACTOR
ADJUST
V+ 35
C REF 34
C REF 33
0.1 μ F
100k ? 1M ?
200k ? 470k ?
100k ?
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
0.01 μ F
0.33 μ F
390k ?
ZERO
ADJUST
SILICON NPN
MPS 3704 OR
SIMILAR
9V
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
BP 21
?
TO DISPLAY
TO BACKPLANE
A silicon diode-connected transistor has a temperature coefficient of about -2mV/ o C. Calibration is achieved by placing the sensing transistor in
ice water and adjusting the zeroing potentiometer for a 000.0 reading. The sensor should then be placed in boiling water and the scale-factor
potentiometer adjusted for a 100.0 reading.
FIGURE 16. ICL7126 USED AS A DIGITAL CENTIGRADE THERMOMETER
12
FN3084.5
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