This document describes the features and characteristics of TM January 2002 AD590 2-Wire, Current Output Temperature Transducer, including linear current output, wide temperature range, two-terminal device voltage in/current out, wide power supply range, and low cost.
The AD590 integrated‑circuit temperature transducer generates an output current proportional to absolute temperature (1 µA per kelvin). It operates from a supply voltage of +4 V to +30 V and requires only a resistor, a power source, and a voltmeter for basic temperature measurement.
Typical applications include temperature sensing, compensation, and biasing in remote or multiplexed systems. The device is supplied in a TO‑52 metal‑can package and is designed for high‑impedance operation, making it suitable for long‑lead connections and easy integration with CMOS multiplexers.
| Temperature Range | -55°C to 150°C |
|---|---|
| Supply Voltage Range | +4 V to +30 V |
| Nominal Output Current at 25°C | 298.2 µA |
| Package | TO‑52 metal can |
| Maximum Junction Temperature | 175 °C |
The AD590 provides a nominal output current of 298.2 µA at 25 °C (298.2 K).
It operates with a supply voltage between +4 V and +30 V.
The device is specified for temperatures from –55 °C to 150 °C.