tc7136a Microchip Technology Inc., tc7136a Datasheet - Page 16

• Manufacturer Part Number: tc7136a
• Description: Low Power 3-1/2 Digit Analog-to-digital Converter
• Manufacturer: Microchip Technology Inc.

TC7136/TC7136A
FIGURE 8-2:
FIGURE 8-3:
DS21461B-page 16
R
UNKNOWN
R
160kΩ
1N4148
Sensor
STANDARD
50kΩ
R
2
300kΩ
50kΩ
R
LOW PARTS COUNT
RATIOMETRIC
RESISTANCE
MEASUREMENT
TEMPERATURE SENSOR
1
V
V
V
ANALOG
COMMON
V
REF
IN
IN
REF
TC7136A
+
-
300kΩ
TC7136
+
-
V+
V
V
V
V
COMMON
V+
IN
IN
REF
REF
-
+
TC7136A
+
TC7136
+
-
9V
LCD
V-
FIGURE 8-4:
0.7%/°C
PTC
5.6kΩ
1N4148
R
3
20kΩ
20kΩ
R
R
POSITIVE TEMPERATURE
COEFFICIENT RESISTOR
TEMPERATURE SENSOR
1
2

2002 Microchip Technology Inc.
160kΩ
V
V
V
V
COMMON
V+
IN
IN
REF
REF
TC7136A
-
+
TC7136
+
+
-
9V
V-