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Integrated Circuit
Temperature Probe
OM-2628 Series
High Precalibrated
Accuracy: 0.5°C (0.9°F)
Maximum @ 25°C (77°F)
Excellent Linearity:
0.15°C (0.27°F)
Maximum [0 to 70°C
(32 to 158°F)]
Wide Operating
Temperature Range:
-25 to 105°C
(-13 to 221°F)
Single Supply
Operation: 4 to 30V
Excellent Repeatability
and Stability
High Level Output:
1 µA/K
Two Terminal Monolithic
IC: Temperature
In/Current Out
Minimal Self-Heating
Errors
38 and 153 mm
(1.5 and 6")
Standard Lengths
Typical Applications:
Appliance Temperature
Sensing
Automotive Temperature
Measurement and
Control
HVAC
System Monitoring
Industrial Temperature
Control
The OM-2628 probe features
the integrated circuit transducer
AD592CN. This sensor is a two
terminal monolithic integrated
circuit temperature transducer
that provides an output current
proportional to absolute
temperature. For a wide range
of supply voltages the transducer
acts as a high impedance
temperature dependent current
source of 1 µA/K. Improved design
and laser wafer trimming of the
IC’s thin film resistors allows the
OM-2628-C1 shown
smaller than actual size.
AD592CN to achieve absolute
accuracy levels and nonlinearity
errors previously unattainable at
a comparable price.
The OM-2628 probe can
be employed in applications
between -25 and 105°C
(-13 to 221°F) where conventional
temperature sensors (i.e.,
thermistor, RTD, thermocouple,
diode) are currently being used.
Expensive linearization circuitry,
precision voltage references,
bridge components, resistance
measuring circuitry and cold
junction compensation are not
required with the OM-2628 probe.
The OM-2628 is particularly useful
in remote sensing applications,
the AD592CN is immune to
voltage drops and voltage noise
over long lines due to its high
impedance current output.
Specifications
Accuracy
Calibration Error @ 25°C (77°F)
0.3°C (0.54°F) typical, 0.5°C (0.9°F)
maximum
TA = 0 to 70°C (32 to 158°F):
Error Over Temperature:
0.4°C (0.72°F) typical,
0.8°C (1.4°F) maximum
Nonlinearity:
typical, 0.15°C (0.27°F) maximum
TA = -25 to 105°C
Error Over Temperature:
0.5°C (0.9°F) typical,
1°C (1.8°F) maximum
Nonlinearity: 0.1°C (0.18°F) typical,
0.35°C (0.63°F) maximum
0.05°C (0.09°F)
(-13 to 221°F):
OM-2628-C6 shown
smaller than actual size.
Output Characteristics
Nominal Current Output @ 25°C
(298.2 K): 298.2 µA typical
Temperature Coefficient:
1 µA/°C typical
Repeatability: 0.1°C (0.18°F) typical
Long Term Stability: 0.1°C/month
(0.18°F) typical
Absolute Maximum Ratings
Operating Temperature:
-25°C (-13°F) minimum,
105°C (221°F) maximum
Package Temperature: -45°C (-49°F)
minimum, 125°C (257°F) maximum
Forward Voltage (+ to -):
44V maximum
Reverse Voltage (- to +) Lead
Temperature: 20V maximum
Soldering, 10 Seconds: 572°C
(1062°F) maximum
Power Supply
Operating Voltage Range Power
Supply Rejection: 4V minimum,
30V maximum
4V < Vs < 5V: 0.5°C (0.9°F)/V
maximum
5V < Vs < 15V: 0.2°C (0.36°F)/V
maximum
15V < Vs < 30V: 0.1°C (0.18°F)/V
maximum
To Order Visit omega.com/om-2628 for Pricing and Details
Model No. Description
OM-2628-C1
OM-2628-C6
Ordering Example: OM-2628-C1, 38 L x 6.4 mm diameter (1.5 x 1⁄4") AD592CN temperature
probe with 0.91 m (36") inch leads.
38 L x 6.4 mm diameter (1.5 x 1⁄4") AD592CN
temperature probe with 0.91 m (36") leads
153 L x 6.4 mm diameter (6 x 1⁄4") AD592CN
temperature probe with 0.91 m (36") leads
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