- Product information
- Focusens Solution
- Typical Application
- Technical Specifications & Selection Guide
- How Do We Control Quality?
- Are You Facing Any of These Temperature Sensor Problems?
- Why Choose Our TMP117 Digital Temperature Sensor Probe?
- Frequently Asked Questions
- Purchase history
- Customer Reviews
- Buyers Q & A
Model：FST Series-AD590
Key Feature：1 μA/K Linear Current Output
MOQ(Standard)：500 pcs
MOQ(Customized)：TBD
Fucusens Solution
From AD590 Sensor to a Ready-to-Install Temperature Probe
The AD590 sensing element is only one part of a complete temperature sensor assembly. For direct equipment integration, the complete sensor also needs to match: Housing + Probe Structure + Cable + Connector + Mounting + Operating Environment.
Our Capability | What It Solves | Value to Your Business |
AD590 Temperature Sensor | Equipment requires analog temperature measurement | Current output proportional to absolute temperature |
1 μA/K Linear Output | Temperature signal needs a defined relationship | Easier signal interpretation |
2-Terminal Design | Complex wiring is undesirable | Simplifies electrical connection |
Multiple Sensor Grades | Projects require different accuracy levels | J / K / L / M options |
Custom Housing | Standard structure may not fit equipment | Better mechanical compatibility |
Custom Probe Structure | Installation positions vary | Matches equipment design |
Custom Cable | Standard wiring may not fit | Better OEM flexibility |
Connector / Termination Options | Different controllers use different interfaces | Easier system integration |
Typical Applications
Application | Typical Customer | Recommended Solution | Why This Configuration |
Refrigerators | Refrigeration equipment manufacturers | AD590 temperature sensor assembly | Wide temperature range supports refrigeration temperature monitoring |
Air Conditioners | HVAC equipment and controller manufacturers | AD590 current-output temperature sensor | 2-terminal current output supports analog temperature measurement |
Granaries | Grain storage and monitoring equipment manufacturers | Customized AD590 temperature probe | Suitable for temperature monitoring systems |
Cold Storage / Ice Houses | Cold-room and refrigeration equipment manufacturers | AD590 low-temperature sensor assembly | -55°C lower range supports low-temperature monitoring |
Industrial Equipment | Industrial machinery and equipment manufacturers | Customized AD590 temperature sensor | Probe and wiring configuration can be matched to equipment |
Technical Specifications & Selection Guide
Parameter | Specification |
Sensor Series | AD590 |
Sensor Options | AD590J / AD590K / AD590L / AD590M |
Power Supply | 4V to 30V |
Measurement Range | -55°C to +150°C |
Output | Current Output |
Output Current @ 25°C | 298.2 μA |
Temperature Coefficient | 1 μA/K |
Response | 20 μs |
Reverse Bias Leakage Current | 10 pA |
Device Configuration | 2-Terminal |
Operating Principle | Voltage In / Current Out |
Product Structure & Selection Guide
AD590 Grade — Select AD590J, AD590K, AD590L or AD590M according to the required accuracy.
Operating Temperature — Confirm the actual minimum and maximum temperature of the application.
Power Supply — Confirm that the circuit matches the specified 4V to 30V supply range.
Output Interface — The AD590 provides a current output, so the controller or measurement circuit must be designed to process the corresponding signal.
Probe Structure — Confirm probe dimensions and sensing position according to equipment installation.
Housing — Select the housing according to the mechanical structure and operating environment.
Cable — Confirm cable type, length and connection requirements.
Connector / Termination — Match the existing controller, wiring harness or equipment interface.
3 Common Mistakes When Selecting a Pipe-Mounted NTC Sensor
1.Treating AD590 as a Voltage-Output Sensor
Why — The AD590 provides a current output, not the voltage output used by sensors such as LM35.
Better — Confirm that your controller or circuit can process the AD590 current signal.
2.Ignoring the AD590 Grade
Why — AD590J, K, L and M have different accuracy specifications.
Better — Select the grade according to the actual measurement requirement instead of specifying only “AD590.”
3.Focusing Only on the Sensing Element
Why — A suitable AD590 sensing element does not automatically mean the complete probe will fit the equipment.
Better — Evaluate AD590 + Probe Structure + Housing + Cable + Connector + Mounting as one complete sensor solution.
From AD590 Sensor to a Ready-to-Install Temperature Probe
The AD590 sensing element is only one part of a complete temperature sensor assembly. For direct equipment integration, the complete sensor also needs to match: Housing + Probe Structure + Cable + Connector + Mounting + Operating Environment.
Our Capability | What It Solves | Value to Your Business |
AD590 Temperature Sensor | Equipment requires analog temperature measurement | Current output proportional to absolute temperature |
1 μA/K Linear Output | Temperature signal needs a defined relationship | Easier signal interpretation |
2-Terminal Design | Complex wiring is undesirable | Simplifies electrical connection |
Multiple Sensor Grades | Projects require different accuracy levels | J / K / L / M options |
Custom Housing | Standard structure may not fit equipment | Better mechanical compatibility |
Custom Probe Structure | Installation positions vary | Matches equipment design |
Custom Cable | Standard wiring may not fit | Better OEM flexibility |
Connector / Termination Options | Different controllers use different interfaces | Easier system integration |
Application | Typical Customer | Recommended Solution | Why This Configuration |
Refrigerators | Refrigeration equipment manufacturers | AD590 temperature sensor assembly | Wide temperature range supports refrigeration temperature monitoring |
Air Conditioners | HVAC equipment and controller manufacturers | AD590 current-output temperature sensor | 2-terminal current output supports analog temperature measurement |
Granaries | Grain storage and monitoring equipment manufacturers | Customized AD590 temperature probe | Suitable for temperature monitoring systems |
Cold Storage / Ice Houses | Cold-room and refrigeration equipment manufacturers | AD590 low-temperature sensor assembly | -55°C lower range supports low-temperature monitoring |
Industrial Equipment | Industrial machinery and equipment manufacturers | Customized AD590 temperature sensor | Probe and wiring configuration can be matched to equipment |
Technical Data
Parameter | Specification |
Sensor Series | AD590 |
Sensor Options | AD590J / AD590K / AD590L / AD590M |
Power Supply | 4V to 30V |
Measurement Range | -55°C to +150°C |
Output | Current Output |
Output Current @ 25°C | 298.2 μA |
Temperature Coefficient | 1 μA/K |
Response | 20 μs |
Reverse Bias Leakage Current | 10 pA |
Device Configuration | 2-Terminal |
Operating Principle | Voltage In / Current Out |
Sensor Construction & Selection Guide
AD590 Grade — Select AD590J, AD590K, AD590L or AD590M according to the required accuracy.
Operating Temperature — Confirm the actual minimum and maximum temperature of the application.
Power Supply — Confirm that the circuit matches the specified 4V to 30V supply range.
Output Interface — The AD590 provides a current output, so the controller or measurement circuit must be designed to process the corresponding signal.
Probe Structure — Confirm probe dimensions and sensing position according to equipment installation.
Housing — Select the housing according to the mechanical structure and operating environment.
Cable — Confirm cable type, length and connection requirements.
Connector / Termination — Match the existing controller, wiring harness or equipment interface.
3 Common Mistakes When Selecting a Clamp-Mount NTC Sensor
1.Treating AD590 as a Voltage-Output Sensor
Why — The AD590 provides a current output, not the voltage output used by sensors such as LM35.
Better — Confirm that your controller or circuit can process the AD590 current signal.
2.Ignoring the AD590 Grade
Why — AD590J, K, L and M have different accuracy specifications.
Better — Select the grade according to the actual measurement requirement instead of specifying only “AD590.”
3.Focusing Only on the Sensing Element
Why — A suitable AD590 sensing element does not automatically mean the complete probe will fit the equipment.
Better — Evaluate AD590 + Probe Structure + Housing + Cable + Connector + Mounting as one complete sensor solution.
Sensor Performance Is Only One Part of a Reliable Temperature Probe
For a complete AD590 sensor assembly, quality control should cover both the sensing element and the mechanical/electrical assembly.
Incoming Material Inspection
· AD590 sensing element checked according to confirmed grade
· Probe housing inspected according to specification
· Cable specification verified before assembly
· Connector and termination materials checked
· Customized components checked against confirmed requirements
Process Control
· Sensor electrical connection controlled during assembly
· Sensing element positioning checked
· Probe structure controlled according to approved drawing
· Cable length and termination verified
· Mechanical assembly checked before final inspection
Finished Product Inspection
Test Item | Verification |
Sensor Function | Current output verification |
Output at Reference Temperature | According to confirmed sensor specification |
Probe Dimensions | According to approved drawing |
Cable Specification | According to confirmed requirement |
Cable Length | According to specification |
Connector / Termination | According to equipment interface |
Electrical Connection | Functional inspection |
Appearance | Finished assembly inspection |
If You Are an Equipment Manufacturer / OEM
Common Problem | What It Means for Your Business |
Temperature accuracy is not sufficient | Standard sensing solutions may not meet precision measurement requirements |
Power consumption is too high | Battery-powered and wireless equipment requires lower sensor current |
A bare sensor IC cannot be installed directly | Additional probe, wiring and mechanical design are still required |
Standard probe dimensions do not fit | Different equipment requires different sensing positions and structures |
Cable or connector does not match | Secondary wiring increases assembly time |
Pinout does not match the controller | Electrical incompatibility delays product integration |
If You Are a Distributor / Importer
Common Problem | What It Means for Your Business |
One standard probe cannot cover different projects | Customers require different probe dimensions and structures |
Customers use different connectors | Fixed connection options limit OEM projects |
Customers require different cable lengths | Standard assemblies cannot directly fit every application |
Accuracy requirements vary by application | Sensor selection must consider the actual temperature range |
Customers need a complete probe, not only an IC | Probe assembly capability becomes important for project conversion |
Need More Than a TMP117 Sensor IC?
The TMP117 provides the digital sensing performance, but your equipment still needs the right: Probe + Cable + Connector + Pinout + Installation Structure
Send us your drawing, existing sensor or application requirements.
Get a High-Accuracy Digital Temperature Probe Configured for Your Equipment.
Sample Support
Standard Samples — Available according to current specification and stock.
AD590 Grade Selection — AD590J / K / L / M according to project requirements.
Customized Samples — Arranged after sensor assembly specifications are confirmed.
Probe Customization — Structure and dimensions according to mounting requirements.
Cable Customization — Cable configuration according to application requirements.
Connector / Termination — Matched according to equipment interface.
Technical Support — Support for AD590 grade selection and complete sensor assembly configuration.
Sample Validation Before Mass Production
For customized AD590 sensor assemblies, we recommend validating: AD590 Grade → Output Current → Temperature Response → Probe Structure → Cable → Connector → Installation. Testing the sample under the actual equipment operating conditions is recommended before pilot production.
Quality Assurance
AD590 Sensor — According to confirmed grade and specification.
Probe Dimensions — According to approved drawing.
Cable — According to confirmed specification and length.
Connector / Termination — According to equipment interface.
Customized Structure — Confirmed before production.
Finished Sensor Assembly — Functional inspection before shipment.
MOQ & Lead Time
Standard MOQ — Contact us for current MOQ.
Customized MOQ — Depends on probe, cable and connection requirements.
Standard Lead Time — Contact us for current production schedule.
Customized Lead Time — Depends on the sensor assembly configuration.
Sample Lead Time — Confirmed after specification review.
Cooperation Process: Application Review → AD590 Grade Confirmation → Temperature Range → Probe Structure → Cable / Connector → Drawing Confirmation → Sample Testing → Pilot Order → Mass Production
Q1. What is the AD590?
The AD590 is a 2-terminal integrated-circuit temperature transducer that produces an output current proportional to absolute temperature.
Q2. What type of output does the AD590 provide?
It provides a current output with a nominal temperature coefficient of 1 μA/K.
Q3. What is the output current at 25°C?
According to the supplied specification, the output current is 298.2 μA at 25°C.
Q4. What is the AD590 power supply range?
The specified power supply range is 4V to 30V.
Q5. What is the temperature measurement range?
The specified range is -55°C to +150°C.
Q6. What accuracy grades are available?
AD590J — ±5.0°C; AD590K — ±2.5°C; AD590L — ±1.0°C; AD590M — ±0.5°C. These accuracy values are specified at 25°C and VS = 5V, unless otherwise noted.
Q7. What does 1 μA/K mean?
It means the AD590 output current changes in proportion to absolute temperature with a nominal coefficient of 1 microampere per Kelvin.
Q8. Is AD590 a 2-wire sensor?
The AD590 is specified as a 2-terminal device: voltage in / current out.
Q9. Can the AD590 be made into a complete temperature probe?
Yes. The sensing element can be integrated with the required probe structure, housing, cable and connection according to the equipment.
Q10. Can you customize the probe and cable?
Yes. The complete sensor assembly can be configured according to the customer's installation and wiring requirements.
Q11. Which AD590 grade should I choose?
The grade should be selected according to the required measurement accuracy and application conditions.
Q12. What information is required for a quotation?
Please provide: Application + AD590 Grade + Temperature Range + Probe Structure + Cable + Connector / Termination + Quantity.
- User name Member Level Quantity Specification Purchase Date
- Satisfaction ：
-
Expert for Thermistors Temperature Sensors Humidity Sensors Level Sensors ; Reliable but flexible custom products development
100+ Sensing Solutions Developed Annually for Different Applications
80+ Countries Customers Serviced
