TC7107 TelCom, TC7107 Datasheet - Page 19

• Manufacturer Part Number: TC7107
• Description: 3-1/2 DIGIT A/D CONVERTERS
• Manufacturer: TelCom

3-1/2 DIGIT A/D CONVERTERS
Figure 24. Circuit for Developing Underrange and Overrange
Figure 26. TC7107A With a 1.2V External Band-Gap Reference.
TC7107A
O/R
U/R
TELCOM SEMICONDUCTOR, INC.
CD4023
OR 74C10
Signals from TC7106A Outputs.
TO PIN 1
(V
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
–
IN
Tied to Common.)
0.47 F
0.22 F
TO DISPLAY
0.1 F
LOGIC
V CC
TO
100k
100pF
V
+
CD4077
1k
47k
0.01 F
SET V REF = 100mV
O/R = OVERRANGE
U/R = UNDERRANGE
1
20
1.2V
10k
TC7106A
1M
10k
TC04
40
21
LOGIC
+
–
GND
TO
V
IN
V
V
–
+
–
Figure 25. TC7106A/TC7107A: Recommended Component
Figure 27. TC7107A Operated from Single +5V Supply. An
TC7107A
TC7106A
TC7107A
Values for 2.00V Full-Scale
External Reference Must Be Used in This Application.
TO PIN 1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
TO PIN 1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
0.22 F
0.47 F
TO DISPLAY
0.047 F
0.22 F
0.1 F
TO DISPLAY
0.1 F
100k
100pF
100k
100pF
1 k
25k
47k
SET V REF = 1V
0.01 F
470k
SET V REF = 100mV
0.01 F
1.2V
10k
1M
24k
TC7106A
TC7107A
1M
10k
TC7106
TC7107
TC04
+
–
IN
V +
V –
+
–
3-201
IN
V
+
1
2
3
4
5
6
7
8