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OM-2628
Integrated Circuit Temperature Probes
- High Precalibrated Accuracy: ± 0.5°C (0.9°F) Maximum @ 25°C
- 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
Product Overview
- Accuracy Detail 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: 0.05°C (0.09°F) typical, 0.15°C (0.27°F) maximum TA = -25 to 105°C (-13 to 221°F): 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
- Forward Voltage ± 44 V
- Insulation PFA
- Linearity 0.15°C
- Linearity Note Excellent Linearity: 0.15°C (0.27°F) Maximum [0 to 70°C (32 to 158°F)]
- Long Term Stability 0.1°C/month
- Long Term Stability Note 0.1°C/month (0.18°F) typical
- Nominal Current Output 298.2 µA
- Nominal Current Output Note Nominal Current Output @ 25°C (298.2 K): 298.2 µA typical
- Package Temperature, Max 125 °C
- Package Temperature, Min -45 °C
- Probe Diameter 0.25 in
- Probe Type Integrated Circuit Temperature Probes
- Process Temperature, Max 105 °C
- Process Temperature, Min -25 °C
- Repeatability 0.1°C
- Repeatability Note 0.1°C (0.18°F) typical
- Reverse Voltage ± 20 V
- Reverse Voltage Note Reverse Voltage (- to +) Lead Temperature: 20V maximum
- Series ID OM-2628
- Soldering 572 °C
- Soldering Note Soldering, 10 Seconds: 572°C (1062°F) maximum
- Temperature Coefficient 1 µA/°C
- Temperature Coefficient Note 1 µA/°C typical
- Temperature Probe Style Immersion Probe
- Temperature Sensor Type Thermistor
Supported Applications
The OM-2628 Series is an Integrated Circuit Temperature Probe built around the AD592CN transducer — a two-terminal monolithic integrated circuit that provides an output current proportional to absolute temperature. It is designed for applications requiring high accuracy, linearity, and stability over a wide temperature range with minimal self-heating errors.
Because the transducer behaves as a high-impedance current source, it tolerates long lead runs and voltage drops without loss of signal, which suits appliance, automotive, and HVAC temperature sensing as well as general-purpose electronic temperature measurement.
Operating Conditions & Performance
The probe measures temperature over -25 to 105°C (-13 to 221°F) and outputs 1 µA/K, with a nominal current output of 298.2 µA typical at 25°C (298.2 K). Repeatability is 0.1°C (0.18°F) typical and long-term stability is 0.1°C/month (0.18°F) typical.
- Accuracy: 0.5°C (0.9°F) maximum @ 25°C (77°F); 0.15°C (0.27°F) maximum @ 0 to 70°C (32 to 158°F).
- Operating temperature: -25°C (-13°F) minimum, 105°C (221°F) maximum.
- Storage (package) temperature: -45°C (-49°F) minimum, 125°C (257°F) maximum.
- Power supply: 4 to 30V (4V minimum, 30V maximum).
- Forward voltage (+ to -): 44V maximum.
- Reverse voltage (- to +): 20V maximum.
Supply-voltage sensitivity is low: rejection is 0.2°C (0.36°F)/V maximum for 5V < Vs < 15V and 0.1°C (0.18°F)/V maximum for 15V < Vs < 30V. The probe body has a 6.4 mm (¼") diameter, and the temperature coefficient is 1 µA/°C typical.
Configuration Options
All models use the same AD592CN transducer and share the -25 to 105°C (-13 to 221°F) measurement range and accuracy behavior; the models differ in probe length and lead length rather than in sensing performance.
- Probe length: the C1 configuration is a 38 mm (1.5 in) probe, while the C6 configuration is a longer 153 mm (6 in) probe, both 6.4 mm (¼") in diameter.
- Lead length: the base configurations are supplied with 0.91 m (36") leads, and extended lead-length configurations of the C1 probe are offered with 72" and 144" leads.
Key Product Differences
The model lineup consists of the following probe configurations:
- OM-2628-C1 — 38 L x 6.4 mm diameter (1.5 x ¼") AD592CN temperature probe with 0.91 m (36") leads.
- OM-2628-C6 — 153 L x 6.4 mm diameter (6 x ¼") AD592CN temperature probe with 0.91 m (36") leads.
- OM-2628-C1-72 INCH — C1 probe configured with 72" leads.
- OM-2628-C1-144 INCH — C1 probe configured with 144" leads.
PDFs & Manuals
