AD590JH

The AD590JH is a precision, 2-terminal integrated circuit temperature transducer manufactured by Analog Devices (or Intersil Corporation, depending on the sourcing). This temperature sensor produces an output current that is proportional to the absolute temperature, making it ideal for a wide range of temperature-sensing applications.

Key features of the AD590JH include:

1. Linear Current Output: The device provides a linear current output of 1 μA/K, which means that the output current changes by 1 μA for every Kelvin change in temperature. This makes it easy to interface with various measurement and control circuits.
2. Wide Temperature Range: The AD590JH operates over a wide temperature range of -55°C to 150°C, covering a broad spectrum of potential applications.
3. Two-Terminal Device: The sensor has a simple two-terminal design, requiring only a DC voltage supply (ranging from +4V to +30V) to operate. This simplicity reduces the complexity of the associated circuitry and makes it easier to integrate into existing systems.
4. High Impedance Current Output: The AD590JH features a high output impedance, which makes it insensitive to voltage drops over long lines in remote sensing applications. This allows for reliable temperature measurements even when the sensor is located hundreds of feet away from the receiving circuitry.
5. Laser Trimmed for Calibration: The device is laser-trimmed at the wafer level to ensure accurate calibration. This results in a highly precise temperature sensor with excellent linearity and stability.
6. Low Cost and Easy to Use: The AD590JH offers a low-cost solution for temperature measurement, eliminating the need for costly transmitters, filters, lead wire compensation, and linearization circuits. Its simple design and ease of use make it an attractive alternative for many temperature measurement situations.

Applications for the AD590JH include, but are not limited to, temperature compensation or correction of discrete components, biasing proportional to absolute temperature, flow rate measurement, level detection of fluids, anemometry, and various other remote sensing applications. Its combination of precision, simplicity, and versatility makes it a valuable addition to any temperature measurement system.