PRECISION TEMPERATURE-TO-VOLTAGE
CONVERTERS WITH SHUTDOWN MODE
PRELIMINARY INFORMATION
TC1023
TC1023
TC1024
TC1024
PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS
WITH SHUTDOWN MODE
FEATURES
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s
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Linearized Temperature-to-Voltage Converters
Direct Centigrade Output Voltage Scaling (TC1023)
Shutdown/Calibrate Mode
Multi-Zone Temperature Sensing Capability
Wide Temperature Measurement
Range (TC1024) ........................... – 20
°
C to +125
°
C
Excellent Temperature Converter Linearity .. 0.8
°
C
Over Temperature
High Temperature Converter Accuracy .........
±
2
°
C
at 25
°
C Guaranteed
Small Packages ......... 8-Pin SOIC and 8-Pin MSOP
GENERAL DESCRIPTION
The TC1023/1024 temperature sensors furnish a lin-
earized output voltage directly proportional to measured
temperature. The TC1023 has a temperature measure-
ment range of – 20°C to +100°C. Its output voltage is
directly calibrated in degrees Centigrade (i.e., V
OUT
=
10mV/°C x Temperature
°C).
An external pull-down resis-
tor to a negative voltage source is required for temperature
measurement below 0°C.
The TC1024 has a temperature measurement range of
– 20°C to +125°C, and operates with a single supply. It has
the same output voltage slope with temperature as the
TC1023 (10mV/°C). The output voltage range is 100mV at
– 20°C to 1,750mV at +125°C. Both devices have a chip
enable input that reduces supply current to 1µA (typical)
when pulled active high. In this state, the output defaults to
a high resistance allowing an external reference voltage to
be directly connected for A/D calibration.
Small size, low cost, flexibility and low power operation
make the TC1023/1024 suitable for a wide range of gen-
eral purpose temperature measurement applications.
APPLICATIONS
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Power Supply Thermal Shut-Down
Temperature-Controlled Fans
Temperature Measurement/Instrumentation
Temperature Regulators
Consumer Electronics
Lithium Battery Temperature Monitor
TYPICAL APPLICATION
ORDERING INFORMATION
Output
Voltage
At 25
°
C
250mV
250mV
750mV
750mV
Part No.
V
CC
= 2.2V to 12V
MICROCONTROLLER
V
CC
A/D
CONVERTER
Package
8-Pin SOIC
8-Pin MSOP
8-Pin SOIC
8-Pin MSOP
Temp. Range
– 20°C to +100°C
– 20°C to +100°C
– 20°C to +125°C
– 20°C to +125°C
TC1023VOA
TC1023VUA
TC1024VOA
TC1024VUA
V
OUT
TC1023
GND
CE
PIN CONFIGURATION
8-Pin SOIC
I/O LINE
V
OUT
NC
NC
GND
1
2
3
4
TC1023VOA
TC1024VOA
8
7
6
5
VCC
NC
NC
CE
V
OUT
NC
NC
GND
1
2
3
4
TC1023VUA
TC1024VUA
MSOP-8
8
7
6
5
V
CC
NC
NC
CE
TC1023/1024-05
6/12/97
TelCom Semiconductor reserves the right to make changes in the circuitry and
1
specifications of its devices.
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
