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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1047A Datasheet

Precision Temperature-to-Voltage Converter

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TC1047A pdf
TC1047/TC1047A
Precision Temperature-to-Voltage Converter
Features
• Supply Voltage Range:
- TC1047: 2.7V to 4.4V
- TC1047A: 2.5V to 5.5V
• Wide Temperature Measurement Range:
- -40oC to +125oC
• High Temperature Converter Accuracy:
- ± 2oC, Max, at 25°C
• Linear Temperature Slope: 10 mV/°C (typ.)
• Available in 3-Pin SOT-23B Package
• Very Low Supply Current:
- 35 µA Typical
Applications
• Cellular Phones
• Power Supply Thermal Shutdown
• Temperature-Controlled Fans
• Temperature Measurement/Instrumentation
• Temperature Regulators
• Consumer Electronics
• Portable Battery-Powered Equipment
Block Diagram
VDD = 2.5V to 5.5V
PICmicro®
Microcontroller
VDD
TC1047A
VSS
A/D
Converter
General Description
The TC1047 and TC1047A are linear voltage output
temperature sensors whose output voltage is directly
proportional to the measured temperature. The
TC1047 and TC1047A can accurately measure
temperature from -40°C to +125°C. With the TC1047,
the supply voltage can vary between 2.7V and 4.4V.
The power supply range of the TC1047A is from 2.5V
to 5.5V.
The output voltage range for these devices is typically
100 mV at -40°C, 500 mV at 0°C, 750 mV at +25°C and
1.75V at +125°C. A 10 mV/°C voltage slope output
response allows for a predictable temperature
measurement over a wide temperature range. The
TC1047 and TC1047A are packaged in 3-pin SOT-23B
packages, making them ideal for space-critical
applications.
Package Type
3-Pin SOT-23B(NOTE)
VSS
3
TC1047/1047A
12
VDD
VOUT
Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236
© 2005 Microchip Technology Inc.
DS21498C-page 1
Free Datasheet http://www.datasheet4u.com/


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1047A Datasheet

Precision Temperature-to-Voltage Converter

No Preview Available !

TC1047A pdf
TC1047/TC1047A
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.
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, these specifications apply for the entire supply voltage range
and for TA = -40°C to +125°C.
Parameters
Sym Min Typ Max Units
Conditions
Supply Voltage
Supply Current, Operating
Average Slope of Output Voltage
Temperature Accuracy
Output Voltage
Output Source and Sink Current
VDD
IQ
AV
TMPACY
VOUT
IOUT
2.7
2.5
-2
-3
730
1720
100
35
10
±0.5
±0.5
1.0
100
750
1750
4.4
5.5
60
+2
+3
770
1780
V TC1047
V TC1047A
µA
mV/°C
°C TA = 25°C
°C TA = +125°C
°C TA = -40°C
mV TA = -40°C
mV TA = 25°C
mV TA = +125°C
µA
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = +2.3V to +5.5V and VSS = GND.
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Specified Temperature Range
TA -40 — +85
°C
Operating Temperature Range
TA -40 — +125 °C Note 1
Storage Temperature Range
TA -65 — +150 °C
Thermal Package Resistances
Thermal Resistance, 3L-SOT-23B θJA — 336 —
°C/W
Note 1: The TC1047/TC1047A operate over this extended temperature range, but with reduced performance. In
any case, the Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C.
DS21498C-page 2
© 2005 Microchip Technology Inc.
Free Datasheet http://www.datasheet4u.com/


Part Number TC1047A
Description Precision Temperature-to-Voltage Converter
Maker Microchip
Total Page 12 Pages
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