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ICL7116 查看數據表(PDF) - Intersil

零件编号产品描述 (功能)生产厂家
ICL7116 3 1/2 Digit, LCD/LED Display, A/D Converter with Display Hold Intersil
Intersil Intersil
ICL7116 Datasheet PDF : 14 Pages
First Prev 11 12 13 14
Typical Applications (Continued)
ICL7116, ICL7117
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
V+ 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
GND 21
100k
100pF
SET VREF
= 1.000V
0.1µF
25k24k
1M
0.047µF
470k
0.01µF
0.22µF
TO DISPLAY
V+
+
IN
-
V-
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
V+ 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
GND 21
100k
100pF
SET VREF
= 100mV
0.1µF
+5V
1k10k15k
1.2V (ICL8069)
1M
+
0.01µF
IN
0.47µF
-
47k
0.22µF
TO DISPLAY
FIGURE 13. ICL7116 AND ICL7117: RECOMMENDED
COMPONENT VALUES FOR 2.0V FULL SCALE
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.
FIGURE 14. ICL7117 OPERATED FROM SINGLE +5V SUPPLY
V+
OSC 1 40 100k
OSC 2 39
OSC 3 38
TEST 37 100pF
REF HI 36
V+ 35
CREF 34
CREF 33
COMMON 32
0.1µF
IN HI 31
IN LO 30
A-Z 29
BUFF 28
0.47µF
47k
INT 27
V - 26
0.22µF
V
G2 25
C3 24
A3 23
TO DISPLAY
G3 22
GND 21
OSC 1 40
OSC 2 39
100k
OSC 3 38
TEST 37
REF HI 36
100pF
SCALE
FACTOR
ADJUST
V+ 35
CREF
34
0.1µF
CREF 33
COMMON 32
100k1M
100k220k
IN HI 31
IN LO 30
A-Z 29
BUFF 28
0.01µF
ZERO
ADJUST
0.47µF
47k
INT 27
V - 26
0.22µF
G2 25
C3 24
A3 23
TO DISPLAY
G3 22
BP 21
TO BACKPLANE
22k
SILICON NPN
MPS 3704 OR
SIMILAR
9V
The resistor values within the bridge are determined by the desired
sensitivity.
FIGURE 15. ICL7117 MEASUREING RATIOMETRIC VALUES OF
QUAD LOAD CELL
A silicon diode-connected transistor has a temperature coefficient of
about -2mV/oC. 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. ICL7116 USED AS A DIGITAL CENTIGRADE
THERMOMETER
12
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