Part A
AD590MF/883B
ADI公司
- Lifecycle
- Active
- Stock
- 1524 件
- Package
- CFLATPACK-2
- Series
- 溫度感測器-類比和數位輸出
Replacement verdict
Compatible functional replacement candidate
The AD590LF and AD590MF/883B are functionally equivalent current-output temperature transducers sharing the same 2-terminal architecture, linear 1 µA/K output, and wide supply range, making the AD590MF/883B a viable functional substitute for the AD590LF where the extended military temperature range and screening are acceptable. Designers should validate package thermal behavior and confirm that the wider specified operating range aligns with the target application before substituting.
Output Type
High match
Supply Voltage Range
High match
Operating Temperature Range
Validation required
Package Type
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD590LF | AD590MF/883B | Why it matters |
|---|---|---|---|
| Temperature Coefficient (Sensitivity) | 1 µA/K | 1 µA/K | Defines the output current change per Kelvin; identical sensitivity ensures the same transfer function and interchangeability in temperature-to-current conversion circuits. |
| Calibration Error at 25°C | ±0.5°C (max) | ±0.5°C (max) | Determines absolute accuracy at room temperature; matching limits mean both parts require similar trimming for precision measurement. |
| Operating Temperature Range | -55°C to +150°C | -55°C to +150°C | Defines the environmental envelope for the sensor; identical ranges allow direct substitution in military and industrial applications. |
| Supply Voltage Range | +4 V to +30 V | +4 V to +30 V | Sets the allowable power supply window; identical ranges ensure the same circuit biasing works for both parts. |
| Package / Mounting | 2-Pin TO-52 (through-hole) | 2-Pin TO-52 (through-hole) | Mechanical form factor affects PCB footprint and thermal coupling; identical packages allow drop-in replacement. |
| Qualification / Screening | Commercial/Industrial grade | MIL-STD-883B qualified | Screening level determines reliability assurance for aerospace and defense use; the 883B part is tested to military standards while the LF is not. |
| Linearity Error | ±0.3°C (max, full range) | ±0.3°C (max, full range) | Linearity affects accuracy across the full temperature span; identical limits mean comparable performance in wide-range sensing. |
| Output Current at 25°C | 298.2 µA (nominal) | 298.2 µA (nominal) | Nominal output current sets the scaling in the readout circuit; identical values allow the same signal conditioning to be used. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD590MF/883B | AD590LF |
|---|---|---|
| Part Status | Active | Active |
| Sensor Type | Analog, Local | Analog, Local |
| Sensing Temperature - Local | -55°C ~ 150°C | -55°C ~ 150°C |
| Output Type | Analog Current | Analog Current |
| Voltage - Supply | 4V ~ 30V | 4V ~ 30V |
| Accuracy - Highest(Lowest) | ±0.5°C | ±1°C |
| Test Condition | 25°C | 25°C |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AD590LF and AD590MF/883B temperature transducers?
Both are 2-terminal current-output temperature transducers from Analog Devices with a linear output of 1 µA/K. The AD590LF is specified for a commercial temperature range of 0°C to +70°C, while the AD590MF/883B is a military-grade device qualified to MIL-STD-883B and specified over the full military temperature range of −55°C to +125°C. The /883B suffix denotes compliance with MIL-STD-883 screening and test methods, which the LF grade does not carry.
Are the AD590LF and AD590MF/883B electrically interchangeable in a circuit?
Yes, both devices share the same fundamental transfer function of 1 µA/K and the same 2-terminal current-mode architecture, so the basic circuit topology (supply voltage, series resistor for voltage conversion, and load) is identical. However, the AD590MF/883B is tested and guaranteed over the wider −55°C to +125°C range, so substitution is only appropriate when the application's operating temperature and reliability requirements are satisfied by the LF grade's 0°C to +70°C specification.
What temperature ranges are the AD590LF and AD590MF/883B rated for?
The AD590LF is specified for operation from 0°C to +70°C. The AD590MF/883B is specified over the military temperature range of −55°C to +125°C and is additionally screened per MIL-STD-883B. Designs operating outside 0°C to +70°C should use the MF/883B grade or another grade rated for the required range.
What does the /883B suffix on the AD590MF/883B indicate?
The /883B suffix indicates that the device is processed and tested in accordance with MIL-STD-883, Method 883B, which covers military-grade screening, qualification, and quality conformance requirements. This includes additional testing and screening beyond standard commercial grades, making the part suitable for military and high-reliability applications. The AD590LF does not carry this qualification.
What is the output scale factor and supply voltage range for both devices?
Both the AD590LF and AD590MF/883B provide a linear current output of 1 µA/K (approximately 298.2 µA at 25°C) and operate from a supply voltage range of +4 V to +30 V. The output is a current proportional to absolute temperature, allowing remote sensing over long cable runs without significant voltage drop errors.
Can the AD590MF/883B be used as a drop-in replacement for the AD590LF in existing commercial designs?
Electrically and functionally, the AD590MF/883B can replace the AD590LF because both share the same 1 µA/K transfer function and 2-terminal current-mode operation. The MF/883B is a higher-grade, wider-temperature, MIL-STD-883B-screened device, so it is generally acceptable where the LF grade was used, provided the cost and availability of the military-grade part are acceptable. The reverse substitution (LF for MF/883B) is not acceptable in military or wide-temperature applications.
Do the AD590LF and AD590MF/883B differ in accuracy or linearity specifications?
Both grades are members of the AD590 family and share the same core linearity characteristic of the transducer, with the output current proportional to absolute temperature. Grade-specific accuracy (calibration error) and linearity limits are defined in the respective Analog Devices datasheet for each grade; designers should consult the manufacturer datasheet for the exact error budget of the LF versus the MF/883B before finalizing a design.