Datasheet

TC7106/A/TC7107/A
DS21455D-page 22 © 2008 Microchip Technology Inc.
FIGURE 10-8: TC7106/TC7107:
Recommended Component Values for 2.00V Full
Scale.
FIGURE 10-9: TC7107 Operated from
Single +5V Supply.
FIGURE 10-10: 3-1/2 Digit True RMS AC DMM.
100 k Ω
100 pF
0.047 µF
470 k
Ω
0.22 µF
To Display
0.1 µF
25 k Ω
24 k Ω
V+
Set V
REF
= 1V
0.01 µF
+
IN
1M
Ω
–
V-
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
To Pin 1
TC7106A
TC7107A
100pF
0.47µ F
47k Ω
To Display
0.1 µ F
1k Ω
V+
Set V
REF
= 100mV
10k
Ω
10k Ω
1.2V
0.01µ
F
–
IN
1M
Ω
100k Ω
0.22µF
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
TC7107A
To PIn 1
+
SEG
DRIVE
47 k
Ω
1W
10%
+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AD636
–
6.8µF
0.02
mF
20 k
Ω
10%
10 k
Ω
1M Ω
1M Ω
IN4148
1mF
–
+
9M Ω
900 k Ω
90 k Ω
10 k Ω
200 mV
2V
20V
200V
COM
V
IN
TC7106A
LCD Display
24 k
Ω
1k Ω
2.2µF
0.01
1M
Ω 10%
9V
+
1
36
35
32
31
30
26
V+
Analog Common
V
IN
+
V
IN
-
26
27
29
28
40
38
39
BP
V-
C1 = 3 - 10 pF Variable
C2 = 132 pF Variable
V
REF
+
V
REF
-
V-
µF