TC7107 TelCom, TC7107 Datasheet - Page 17

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

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