Overview
The AD590KF is a 2-terminal integrated circuit temperature transducer produced by Analog Devices Inc. This device generates an output current that is proportional to absolute temperature, making it a versatile and reliable component for various temperature-sensing applications. The AD590KF operates within a wide power supply range of 4 V to 30 V and is calibrated to produce an output current of 298.2 μA at 25°C (298.2 K). The use of laser trimming for calibration ensures high accuracy and interchangeability among units.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 4 | - | 30 | V |
| Nominal Current Output @ 25°C (298.2 K) | 298.2 | 298.2 | - | μA |
| Nominal Temperature Coefficient | 1 | 1 | - | μA/K |
| Calibration Error @ 25°C | - | - | ±0.5 | °C |
| Absolute Error (Over Rated Performance Temperature Range) | - | - | ±1.7 | °C |
| Nonlinearity | - | - | ±0.3 | °C |
| Operating Temperature Range | -55 | - | 150 | °C |
| Package | - | - | 2-Ceramic FLATPACK | - |
Key Features
- High Accuracy and Interchangeability: The AD590KF is calibrated using laser trimming, ensuring high accuracy and making units easily interchangeable.
- Wide Operating Voltage Range: The device operates with supply voltages between 4 V and 30 V, providing flexibility in various applications.
- High Impedance Current Output: The output current is insensitive to voltage drops over long lines, making it suitable for remote sensing applications.
- Low Power Requirements: The device consumes low power, typically 1.5 mW at 5 V and 25°C.
- Electrical Durability: The AD590KF can withstand forward voltages up to 44 V and reverse voltages up to 20 V, ensuring robustness against supply irregularities.
Applications
- Temperature Measurement: The AD590KF is suitable for any temperature-sensing application below 150°C, replacing conventional electrical temperature sensors.
- Temperature Compensation and Correction: It can be used for temperature compensation or correction of discrete components and biasing proportional to absolute temperature.
- Flow Rate Measurement and Level Detection: Applications include flow rate measurement, level detection of fluids, and anemometry.
- Remote Sensing: The high impedance current output makes it ideal for remote sensing applications, allowing operation at hundreds of feet from the receiving circuitry.
Q & A
- What is the operating voltage range of the AD590KF?
The AD590KF operates within a voltage range of 4 V to 30 V.
- What is the nominal current output of the AD590KF at 25°C?
The nominal current output is 298.2 μA at 25°C (298.2 K).
- What is the temperature coefficient of the AD590KF?
The nominal temperature coefficient is 1 μA/K.
- What is the calibration error of the AD590KF at 25°C?
The calibration error at 25°C is ±0.5°C.
- What is the absolute error of the AD590KF over its rated performance temperature range?
The absolute error over the rated performance temperature range is ±1.7°C.
- What is the nonlinearity of the AD590KF?
The nonlinearity is ±0.3°C.
- What is the operating temperature range of the AD590KF?
The operating temperature range is -55°C to 150°C.
- What package types are available for the AD590KF?
The AD590KF is available in a 2-Ceramic FLATPACK package.
- Is the AD590KF suitable for remote sensing applications?
Yes, the high impedance current output makes it ideal for remote sensing applications.
- What are some common applications of the AD590KF?
Common applications include temperature measurement, temperature compensation, flow rate measurement, level detection, and anemometry.
