Available Products
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West Instruments
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Smartec
Digital Temperature Sensor Selection Guide

Call for Technical Design Support
Packaged Probes to Your OEM Specification
|
The
Digital Temperature Sensor are available in a number of encapsulations:
TO18, TO92, TO220, SOIC-8L, SOT223.
The Smartec SMT172 can be supplied as a naked die as well.
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Features and Highlights
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Application
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- Worlds
most energy efficient temperature sensor
0.36µJ/measurement (TA=25°C, 3.3V)
- Wide
temperature range: -45°C to 130°C
- Wide
supply voltage range: 2.7V to 5.5V
- High
accuracy: ±0.25°C (-10°C to 100°C TO18)
- ±0.1°C
(-20°C to 60°C, TO18)
- Extreme
low noise: 0.002°C
- Ultra-low
current (60µA active or 220nA average)
- Excellent
long term stability
- Direct
interface with Microcontroller (MCU)
- Wide
range of package options
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- Ultra-low
power applications: wearable electronics,
wireless sensor networks
-
Medical applications: body temperature monitoring
- Instrumentation:
(Bio)chemical analysis, precision equipment
- Environmental
monitoring (indoor/outdoor)
- Industrial
applications: process monitoring/controlling
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Introduction
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The SMT172
is an ultra-low power, high-precision temperature sensor that
combines the ease of use with the worlds leading performance
over a wide temperature range. Using the most recent advances
in the silicon temperature sensing technology, the SMT172
has applied some really sophisticated IC design techniques
as well as high-precision calibration methods, to achieve
an absolute inaccuracy of less than ±0.1°C in the
range of -20°C to 60°C and an accuracy of 0.4 °C
from -45 to +130 °C. This makes the sensor especially
useful in all applications where human conditions (climate
control, food processing etc.) are to be controlled. The CMOS
output of the sensor can drive cable lengths up to 20 meters.
This makes the SMT172 very useful in remote sensing and control
applications..
The SMT172 operates with a supply voltage from 2.7V to 5.5V.
The typical active current of only 60µA, the high speed
conversion over 4000 outputs per second (at room temperature)
and an extremely low noise makes this sensor the most energy
efficient temperature sensor in the world (0.36µJ/measurement).
The SMT172 has a pulse width modulated (PWM) output signal,
where the duty cycle is proportional to the measured temperature.
This makes it possible that the sensor can directly interface
to a MCU without using an Analog-to-Digital Converter (ADC).
Today, the hardware Timer in a MCU to read our PWM signal
has become available almost universally, fast in speed and
low in cost. Therefore, it is extremely easy for any user
to get started with this sensor and achieve a very quick time
to market.
This combination
of high accuracy, high resolution, high speed, and low-energy
consumption makes this sensor suited for commercial and industrial
applications.
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|
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Specification
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Sensor Accuracy,Ta1:
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±0.8°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.1°C/-20°C
~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
Ideal for packaging in a SS Tube
with up to 25 Ft leads
|
|
|
- High
accuracy: ±0.1°C (-20°C to 60°C)
- High
accuracy: ±0.25°C (-10°C to 100°C)
- Ideal
for refrigators, freezers, ovens, HVAC
- Available
with up to 25 Ft. PVC or Teflon Leads
- Probe
is 0.270" dia. x 4.5", 316 SS
- Epoxy
sealed for use in humid environments
- Call
800-284-3769 for custom designs
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|
|
Specification
|
Sensor Accuracy,Ta1:
|
±1.0°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.25°C/-20°C ~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
|
|
|
Specification
|
Sensor Accuracy,Ta1:
|
±1.0°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.25°C/-20°C ~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
|
|
|
Specification
|
Sensor Accuracy,Ta1:
|
±1.0°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.25°C/-20°C ~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
|
|
|
Specification
|
Sensor Accuracy,Ta1:
|
±1.0°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.25°C/-20°C ~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
|
|
|
Specification
|
Sensor Accuracy,Ta1:
|
±1.0°C/-45°C ~ 130°C |
Sensor Accuracy, Ta2:
|
±0.25°C/-20°C ~ 80°C |
Temperature Coefficient: |
10mV/°C |
Operating Voltage:
|
2.7 ÷ 5.5V |
Operating Current:
|
220nA |
|
|
|
|