Overview
The AD590KH is a 2-terminal integrated circuit temperature transducer produced by Analog Devices Inc. This device converts absolute temperature into a proportional current output, making it highly suitable for various temperature measurement applications. The AD590KH operates within a wide temperature range of -55°C to +150°C and is characterized by its high accuracy, linearity, and reliability. It is particularly useful in applications where solid-state reliability and fast response times are critical.
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 | ±2.5 | °C | ||
| Absolute Error (Over Rated Performance Temperature Range) | ±5.5 | °C | ||
| Absolute Error (With 25°C Calibration Error Set to Zero) | ±2.0 | °C | ||
| Nonlinearity | ±0.8 | °C | ||
| Repeatability | ±0.1 | °C | ||
| Long-Term Drift | ±0.1 | °C/month |
Key Features
- Linear Current Output: 1 μA/K, making it easy to measure absolute temperature.
- Wide Temperature Range: Operates from -55°C to +150°C.
- High Accuracy: Calibration error of ±2.5°C at 25°C and absolute error of ±5.5°C over the rated temperature range.
- Low Nonlinearity: ±0.8°C, ensuring accurate temperature measurements.
- No Linearization Required: No need for linearization circuitry, precision voltage amplifiers, or cold junction compensation.
- Versatile Packaging: Available in 3-pin TO-52, 2-lead FLATPACK, 8-lead SOIC, and die form.
- Fast Response Time: Suitable for fast surface temperature measurements.
- High Impedance Output: Insensitive to voltage drops over long lines, making it ideal for remote sensing applications.
Applications
- Temperature Measurement: Ideal for applications requiring accurate temperature measurements below 150°C.
- Surface Measurements: Suitable for fast response surface temperature measurements.
- Sensors for Controllers and Meters: Used in various control and measurement devices.
- Custom-Made Probes: Can be used in custom-made temperature probes.
- PC Boards: Used on PC boards for accurate temperature measurements.
- Thermocouple Cold Junction Compensation: Can be used for thermocouple cold junction compensation.
- Temperature Control Applications: Suitable for various temperature control applications.
Q & A
- What is the operating temperature range of the AD590KH?
The AD590KH operates within a temperature range of -55°C to +150°C.
- What is the nominal current output of the AD590KH at 25°C?
The nominal current output at 25°C (298.2 K) is 298.2 µA.
- What is the calibration error of the AD590KH at 25°C?
The calibration error at 25°C is ±2.5°C.
- Does the AD590KH require linearization circuitry?
No, the AD590KH does not require linearization circuitry, precision voltage amplifiers, or cold junction compensation.
- What are the available package types for the AD590KH?
The AD590KH is available in 3-pin TO-52, 2-lead FLATPACK, 8-lead SOIC, and die form.
- Is the AD590KH suitable for remote sensing applications?
Yes, the AD590KH is suitable for remote sensing applications due to its high impedance output, which is insensitive to voltage drops over long lines.
- What is the nonlinearity of the AD590KH?
The nonlinearity of the AD590KH is ±0.8°C.
- How accurate is the AD590KH in terms of repeatability and long-term drift?
The repeatability and long-term drift of the AD590KH are both ±0.1°C.
- Can the AD590KH be used for thermocouple cold junction compensation?
Yes, the AD590KH can be used for thermocouple cold junction compensation.
- What are some common applications of the AD590KH?
The AD590KH is commonly used in temperature measurement, surface measurements, sensors for controllers and meters, custom-made probes, and PC boards.
