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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1046 Datasheet

High Precision Temperature-to-Voltage Converter

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TC1046 pdf
TC1046
High Precision Temperature-to-Voltage Converter
Features
• Supply Voltage Range: 2.7V to 4.4V
• Wide Temperature Measurement Range:
-40oC to +125οC
• High Temperature Converter Accuracy:
± 2oC, Max, at 25°C
• Linear Temperature Slope: 6.25mV/oC
• Very Low Supply Current: 35µA Typical
• Small 3-Pin SOT-23B Package
Applications
• Cellular Phones
• Power Supply Thermal Shutdown
• Temperature Controlled Fans
• Temperature Measurement/Instrumentation
• Temperature Regulators
• Consumer Electronics
• Portable Battery Powered Equipment
Device Selection Table
Part Number Package
Temp. Range
TC1046VNB 3-Pin SOT-23B -40°C to +125°C
Package Type
3-Pin SOT-23B*
VSS
3
TC1046
General Description
The TC1046 is a linear output temperature sensor
whose output voltage is directly proportional to
measured temperature. The TC1046 can accurately
measure temperature from -40°C to +125°C.
The output voltage range for these devices is typically
174mV at -40°C, 424mV at 0°C, 580 mV at +25°C, and
1205mV at +125°C. A 6.25mV/°C voltage slope allows
for the wide temperature range.
The TC1046 is packaged in a 3-Pin SOT-23B package,
making them ideal for space critical applications.
Functional Block Diagram
VDD = 2.5V to 5.5V
1
VDD
VOUT
TC1046
2
PICmicro®
Microcontroller
A/D
Converter
VSS
3
12
VDD
VOUT
Note: *3-Pin SOT-23B is equivalent to JEDEC TO-236
© 2002 Microchip Technology Inc.
DS21496B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1046 Datasheet

High Precision Temperature-to-Voltage Converter

No Preview Available !

TC1046 pdf
TC1046
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage ......................................................+7V
Voltage on Any Pin with Respect to Supplies:
................................................. VSS -0.3 to VDD + 0.3V
Operating Temperature ...................... -40°C to +125°C
Storage Temperature Range .............. -55°C to +150°C
*Stresses above those listed under "Absolute Maximum Rat-
ings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the
operation sections of the specifications is not implied. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
TC1046 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: These specifications apply for the entire supply voltage range and for TA = -40°C to +125°C, unless
otherwise specified.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VDD
IQ
AV
TMPACY
Supply Voltage
Supply Current, Operating
Average Slope of Output Voltage
Temperature Accuracy at 25°C
VOUT
Output Voltage
IOUT
Output Source and Sink Current
2.7
-2
-3
568
1187
100
35
6.25
±0.5
±0.5
1.0
174
580
1205
4.4
60
+2
+3
193
592
1224
V
µA
mV/°C
°C
°C
°C
mV
mV
mV
µA
TA = 25°C
TA = +125°C
TA = -40°C
TA = -40°C
TA = 25°C
TA = +125°C
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1
TABLE 2-1: PIN FUNCTION TABLE
Pin Number
(3-Pin SOT-23B)
1
2
3
Symbol
VDD
VOUT
VSS
Description
Input Supply Voltage
Temperature Sensor Output
Ground
DS21496B-page 2
© 2002 Microchip Technology Inc.


Part Number TC1046
Description High Precision Temperature-to-Voltage Converter
Maker Microchip Technology
Total Page 10 Pages
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