TC7126 TelCom, TC7126 Datasheet - Page 13

• Manufacturer Part Number: TC7126
• Description: 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: TelCom

3-1/2 DIGIT
ANALOG-TO-DIGITAL CONVERTERS
TELCOM SEMICONDUCTOR, INC.
160 k
1N4148
SENSOR
50 k
R 2
Figure 12. Temperature Sensor
REF02
300 k
GND
50 k
9V
V +
2
4
R 1
V OUT
TEMP
ADJ
300 k
6
5
3
DEPENDENT OUTPUT
CONSTANT 5V
TEMPERATURE
NC
51 k
V IN
V IN
V REF
V REF
COMMON
R 4
V +
–
+
+
–
Figure 14. Integrated Circuit Temperature Sensor
+
TC7126A
51 k
9V
R 5
V –
2
3
–
+
LM358
1/2
8
4
1.86V @
V OUT =
+25°C
1
0.7%/°C
PTC
Figure 13. Positive Temperature Coefficient Resistor
R 2
R 1
5.6 k
1N4148
R 3
Temperature Sensor
50 k
50 k
20 k
20 k
R 1
R 2
160 k
V REF
V REF
V IN
V IN –
COMMON
+
–
+
TC7126A
V –
V
V IN
V IN
V REF
V REF
COMMON
V +
–
+
+
–
+
+
TC7126A
TC7126A
TC7126
9V
V –
3-229
1
2
3
4
5
6
7
8