Overview
The AD590JR, produced by Analog Devices Inc., is a 2-terminal integrated circuit temperature transducer designed to produce an output current proportional to absolute temperature. This device operates within a wide power supply range of 4 V to 30 V and is calibrated to output 298.2 μA at 298.2 K (25°C). The AD590JR is known for its simplicity and cost-effectiveness, eliminating the need for costly transmitters, filters, lead wire compensation, and linearization circuits. It is suitable for temperature-sensing applications below 150°C and is particularly useful in remote sensing due to its high impedance current output.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 4 | 30 | V | |
| Output Current at 25°C (298.2 K) | 298.2 | 298.2 | μA | |
| Temperature Coefficient | 1 | 1 | μA/K | |
| Calibration Error at 25°C | ±5.0 | °C | ||
| Absolute Error (-55°C to 150°C) | ±10.0 | °C | ||
| Non-Linearity | ±1.5 | °C | ||
| Operating Temperature Range | -55 | 150 | °C | |
| Package Type | 8-Lead SOIC |
Key Features
- Linear Current Output: The AD590JR produces an output current proportional to absolute temperature, with a nominal temperature coefficient of 1 μA/K.
- Wide Temperature Range: Operates from -55°C to 150°C, making it suitable for a variety of temperature-sensing applications.
- High Impedance Output: The device acts as a high impedance, constant current regulator, providing excellent rejection of supply voltage drift.
- Low Power Requirements: Consumes low power, typically 1.5 mW at 5 V and 25°C.
- Sensor Isolation: The sensor is isolated from the case, enhancing its reliability and durability.
- Multiple Package Options: Available in various packages including 8-Lead SOIC, 3-pin TO-52, 2-lead FLATPACK, and die form.
- Electrical Durability: Withstands forward voltage up to 44 V and reverse voltage up to 20 V, ensuring robustness against supply irregularities.
Applications
- Temperature Measurement: Ideal for applications requiring accurate temperature measurement below 150°C.
- Remote Sensing: Suitable for remote sensing applications due to its high impedance current output, which is insensitive to voltage drops over long lines.
- Temperature Compensation: Used for temperature compensation or correction of discrete components and biasing proportional to absolute temperature.
- Flow Rate Measurement and Level Detection: Can be applied in flow rate measurement and level detection of fluids.
- Anemometry: Useful in anemometry applications.
Q & A
- What is the operating voltage range of the AD590JR?
The AD590JR operates within a voltage range of 4 V to 30 V.
- What is the output current of the AD590JR at 25°C?
The output current at 25°C (298.2 K) is 298.2 μA.
- What is the temperature coefficient of the AD590JR?
The temperature coefficient is 1 μA/K.
- What is the calibration error at 25°C for the AD590JR?
The calibration error at 25°C is ±5.0°C.
- What is the absolute error over the rated temperature range for the AD590JR?
The absolute error over the rated temperature range (-55°C to 150°C) is ±10.0°C without external calibration adjustment.
- What is the non-linearity of the AD590JR?
The non-linearity is ±1.5°C.
- What are the available package types for the AD590JR?
The AD590JR is available in an 8-Lead SOIC package among others.
- Is the AD590JR suitable for remote sensing applications?
Yes, it is particularly useful in remote sensing due to its high impedance current output.
- What are some common applications of the AD590JR?
Common applications include temperature measurement, remote sensing, temperature compensation, flow rate measurement, level detection, and anemometry.
- How durable is the AD590JR against supply irregularities?
The AD590JR can withstand forward voltage up to 44 V and reverse voltage up to 20 V, making it durable against supply irregularities.
