Overview
The AD590JRZ is a 2-terminal integrated circuit temperature transducer produced by Analog Devices Inc. This device is designed to produce an output current that is proportional to absolute temperature. It operates over a wide power supply range of 4 V to 30 V and is calibrated to output 298.2 μA at 25°C (298.2 K). The AD590JRZ is available in an 8-lead SOIC package and is suitable for a variety of temperature-sensing applications below 150°C.
The device is known for its simplicity and reliability, eliminating the need for costly transmitters, filters, lead wire compensation, and linearization circuits. Its high impedance current output makes it ideal for remote sensing applications, allowing it to operate effectively over long distances without significant voltage drops.
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 | ±1.0 | ±0.5 | °C | |
| Absolute Error (Over Rated Performance Temperature Range) | ±3.0 | ±1.7 | °C | |
| Nonlinearity | ±0.4 | ±0.3 | °C | |
| Operating Temperature Range | -55 | 125 | °C |
Key Features
- High Impedance Output: The AD590JRZ has a high output impedance (>10 MΩ), providing excellent rejection of supply voltage drift and making it suitable for remote sensing applications.
- Wide Power Supply Range: The device operates with a power supply range of 4 V to 30 V.
- Low Power Requirements: It has low power requirements, consuming only 1.5 mW at 5 V and 25°C.
- Electrical Durability: The AD590JRZ can withstand a forward voltage of up to 44 V and a reverse voltage of 20 V, ensuring it is not damaged by supply irregularities or pin reversal.
- No External Calibration Needed: The device does not require external calibration or support circuitry, making it a cost-effective solution for temperature measurement.
- Multiplexing Capability: The current output can be switched by a CMOS multiplexer or the supply voltage can be switched by a logic gate output, making it easy to multiplex.
Applications
- Temperature Measurement: The AD590JRZ is ideal for any temperature-sensing application below 150°C, replacing conventional electrical temperature sensors.
- Remote Sensing: Its high impedance current output makes it particularly useful in remote sensing applications where voltage drops over long lines are a concern.
- Temperature Compensation: It can be used for temperature compensation or correction of discrete components.
- Biasing Proportional to Absolute Temperature: The device can be used to bias components proportional to absolute temperature.
- Flow Rate Measurement and Level Detection: It is also suitable for flow rate measurement and level detection of fluids.
- Anemometry: The AD590JRZ can be used in anemometry applications.
Q & A
- What is the operating voltage range of the AD590JRZ?
The AD590JRZ operates over a voltage range of 4 V to 30 V.
- What is the nominal current output of the AD590JRZ at 25°C?
The nominal current output at 25°C (298.2 K) is 298.2 μA.
- What is the temperature coefficient of the AD590JRZ?
The nominal temperature coefficient is 1 μA/K.
- What is the calibration error of the AD590JRZ at 25°C?
The calibration error at 25°C is ±1.0°C to ±0.5°C depending on the model.
- What is the operating temperature range of the AD590JRZ?
The operating temperature range is -55°C to 125°C.
- Does the AD590JRZ require external calibration or support circuitry?
No, the AD590JRZ does not require external calibration or support circuitry.
- How durable is the AD590JRZ in terms of voltage handling?
The device can withstand a forward voltage of up to 44 V and a reverse voltage of 20 V.
- What are some common applications of the AD590JRZ?
Common applications include temperature measurement, remote sensing, temperature compensation, biasing proportional to absolute temperature, flow rate measurement, level detection of fluids, and anemometry.
- What package types are available for the AD590JRZ?
The AD590JRZ is available in an 8-lead SOIC package.
- Is the AD590JRZ suitable for remote sensing applications?
Yes, the device is particularly useful in remote sensing applications due to its high impedance current output.
