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參數(shù)資料
| 型號： | ICL7107S |
| 廠商： | Intersil Corporation |
| 元件分類： | 串行ADC |
| 英文描述： | LED Display, A/D Converters(3 1/2 位LED 顯示器驅(qū)動 A/D轉(zhuǎn)換器) |
| 中文描述： | LED顯示，A / D轉(zhuǎn)換（3 1 / 2位發(fā)光顯示器驅(qū)動的A / D轉(zhuǎn)換器） |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 534K |
| 代理商： | ICL7107S |
13
FN3082.8
FIGURE 17. ICL7107 MEASUREING RATIOMETRIC VALUES
OF QUAD LOAD CELL
FIGURE 18. ICL7106 USED AS A DIGITAL CENTIGRADE
THERMOMETER
FIGURE 19. CIRCUIT FOR DEVELOPING UNDERRANGE AND
OVERRANGE SIGNAL FROM ICL7106 OUTPUTS
FIGURE 20. CIRCUIT FOR DEVELOPING UNDERRANGE AND
OVERRANGE SIGNALS FROM ICL7107 OUTPUT
Typical Applications
(Continued)
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
30
29
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
GND
100pF
TO PIN 1
0.1
μ
F
100k
0.47
μ
F
TO DISPLAY
The resistor values within the bridge are determined by the desired
sensitivity.
V+
0.22
μ
F
47k
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
30
29
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V -
G2
C3
A3
G3
BP
100pF
TO PIN 1
0.1
μ
F
0.01
μ
F
100k
100k
1M
100k
220k
9V
47k
0.22
μ
F
0.47
μ
F
TO BACKPLANE
TO DISPLAY
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.
SCALE
FACTOR
ADJUST
22k
SILICON NPN
MPS 3704 OR
SIMILAR
ZERO
ADJUST
13
1
2
3
4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V-
G2
C3
A3
G3
BP
O/RANGE
U/RANGE
CD4023 OR
74C10
CD4077
TO LOGIC
V
CC
V+
TO
LOGIC
GND
V-
O/RANGE
U/RANGE
CD4023 OR
74C10
TO LOGIC
V
CC
+5V
V-
33k
The LM339 is required to
ensure logic compatibility
with heavy display loading.
13
1
2
3
4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C
REF
C
REF
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V-
G2
C3
A3
G3
BP
12k
+
-
+
-
+
-
+
-
LM339
ICL7106, ICL7107, ICL7107S
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