TC1047 Datasheet, PDF (1/12 Pages) Microchip Technology – Precision Temperature-to-Voltage Converter

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:
-40^oC to +125^oC
• High Temperature Converter Accuracy:
± 2^oC, Max, at 25°C
• Linear Temperature Slope 10mV/°C (typ.)
• Available in 3-Pin SOT-23B Package
• Very Low Supply Current:
- 35µA Typical
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
TC1047VNB 3-Pin SOT-23B
TC1047AVNB 3-Pin SOT-23B
Temp. Range
-40°C to +125°C
-40°C to +125°C
Package Type
3-Pin SOT-23B*
V_SS
3
TC1047
TC1047A
1
2
V_DD
V_OUT
Note: * 3-Pin SOT-23B is equivalent to JEDEC TO-236
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
100mV at -40°C, 500mV at 0°C, 750mV at +25°C, and
1.75V at +125°C. A 10mV/°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.
Block Diagram
V_DD = 2.5V to 5.5V
PICmicro^®
Microcontroller
V_DD
TC1047A
V_SS
A/D
Converter
© 2002 Microchip Technology Inc.
DS21498B-page 1