3-1/2 DIGIT A/D CONVERTERS
TC7106
TC7106A
TC7107
1
2
3
4
5
6
7
8
TC7107A
9V
+
+
IN4148
200mV
1µF
26
–
–
V
27
29
28
1
IN
9MΩ
V
+
+
V
14
13
12
11
10
9
1
2
3
4
5
6
7
10kΩ
1MΩ
24kΩ
1kΩ
2 V
0.02
µF
TC7106A
900kΩ
90kΩ
10kΩ
1MΩ
36
20 V
V
V
REF
AD636
47kΩ
1 W
10%
–
35
32
31
–
6.8µF
REF
+
200 V
ANALOG
COMMON
1MΩ 10%
40
+
V
8
IN
0.01
µF
20kW
10%
2.2µF
30
26
38
39
–
V
COM
IN
C1 = 3–10pF VARIABLE,
C2 = 132pF VARIABLE
–
V
BP
SEG
DRIVE
LCD DISPLAY
Figure 18. 3 1/2 Digit True RMS AC DMM
9V
+
+
9V
5.6kΩ
160kΩ
160kΩ
300kΩ
300kΩ
+
–
+
–
V
–
V
V
–
IN
V
V
V
R
V
V
1N914
1
IN
20kΩ
+
IN
R
+
IN
1N4148
SENSOR
1
TC7106A
TC7106A
= 2V
50kΩ
V
FS
0.7%/°C
R
2
20kΩ
+
+
REF
R
3
R
V
V
2
V
V
PTC
REF
50kΩ
–
REF
–
REF
COMMON
COMMON
Figure 20. Positive Temperature Coefficient Resistor
Temperature Sensor
Figure 19. Temperature Sensor
TELCOM SEMICONDUCTOR, INC.
3-199
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
