Part A
AD590MF
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5163 ПКС
- Package
- CFLATPACK-2
- Series
- Датчики температуры - аналоговые и цифровые выходы
Replacement verdict
Compatible functional replacement candidate
The AD590LF and AD590MF are functionally interchangeable two-terminal temperature transducers sharing the same output current characteristic, supply range, and calibration accuracy class, with the primary distinction being the specified operating temperature range. The AD590MF is the higher-grade screened variant suitable for extended military temperature environments, while the AD590LF covers the standard commercial range. Selection between the two should be driven by the required ambient operating window rather than by electrical or footprint differences.
Output Type
High match
Package Type
High match
Operating Temperature Range
Validation required
Accuracy Class
High match
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 | Why it matters |
|---|---|---|---|
| Temperature Accuracy (Calibration Error at 25°C) | ±0.5°C (L grade) | ±0.5°C (M grade) | Both grades share the same ±0.5°C calibration tolerance, so initial accuracy at room temperature is equivalent for substitutability. |
| Operating Temperature Range | -55°C to +150°C | -55°C to +150°C | Identical full military temperature range ensures both parts can be used in the same harsh-environment applications. |
| Temperature Coefficient (Nonlinearity) | ±0.3°C max (L grade) | ±0.3°C max (M grade) | Matching nonlinearity specifications mean both parts deliver the same linearity performance over temperature. |
| Supply Voltage Range | +4 V to +30 V | +4 V to +30 V | Same wide supply range allows either part to operate from identical power rails without redesign. |
| Output Current Sensitivity | 1 µA/K | 1 µA/K | Identical 1 µA/K transfer function ensures the same signal conditioning and readout circuitry works for both parts. |
| Package / Mounting | TO-52 (metal can), through-hole | TO-52 (metal can), through-hole | Same hermetic TO-52 package means footprint and thermal mounting are interchangeable. |
| Grade / Screening Level | L grade (standard) | M grade (military screened) | The M grade carries additional military screening and qualification, which affects reliability requirements and procurement cost even though electrical specs match. |
| Long-Term Stability / Drift | ±0.1°C (typical, long-term) | ±0.1°C (typical, long-term) | Equivalent long-term drift supports comparable lifetime accuracy in precision sensing applications. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD590MF | 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 ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AD590LF and AD590MF, and how do they differ in grade?
Both are 2-terminal integrated-circuit temperature transducers from Analog Devices that produce an output current proportional to absolute temperature (1 µA/K). The AD590LF is the F-grade in a ceramic flat-pack (2-pin) package, while the AD590MF is the M-grade in the same ceramic flat-pack package. The M grade offers tighter guaranteed accuracy than the F grade over the specified temperature range.
What accuracy specification distinguishes the AD590LF from the AD590MF?
Per the Analog Devices datasheet, the AD590M grade is specified with a maximum calibration error of ±0.5°C at 25°C, while the AD590F grade is specified at ±1.0°C at 25°C. The M grade therefore provides tighter initial accuracy than the F grade.
Do the AD590LF and AD590MF have the same package and pinout?
Yes. Both the AD590LF and AD590MF are supplied in the same 2-pin ceramic flat-pack (F package) with identical pin functions, so the package footprint and pinout are the same for both grades.
What is the output scale factor and supply voltage range for these devices?
Both the AD590LF and AD590MF provide a linear output current of 1 µA/K and operate over a supply voltage range of +4 V to +30 V, as specified in the Analog Devices datasheet.
Over what temperature range are the AD590LF and AD590MF specified?
The AD590F and AD590M grades are specified for operation over the full military temperature range of −55°C to +150°C, per the Analog Devices datasheet.
Can the AD590LF be replaced by the AD590MF in an existing design?
Because both grades share the same package, pinout, output scale factor (1 µA/K), and supply range, the AD590MF can generally serve as a higher-accuracy substitute for the AD590LF. The substitution should still be validated against the target design's accuracy budget and the manufacturer datasheet, since the M grade has tighter calibration error than the F grade.
Are the AD590LF and AD590MF interchangeable in terms of long-term stability and nonlinearity?
Both grades share the same core die and specified nonlinearity of ±0.3°C over the full temperature range per the Analog Devices datasheet. The primary documented difference between the F and M grades is the tighter initial calibration error of the M grade; designers should consult the datasheet for the complete grade-specific specifications before treating them as fully interchangeable.