AD590 is a 2-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature. It features linear current output, wide temperature range, 2-terminal design, precise calibration, and low cost.
The AD590 temperature transducer is a two‑terminal integrated circuit that provides a current proportional to absolute temperature (1 µA/K). It operates from 4 V to 30 V and requires no external linearization, making it suitable for remote sensing and multiplexed applications.
The device is laser‑trimmed for high accuracy (±0.5 °C typical calibration error) and offers excellent linearity, low power consumption, and high output impedance, allowing use with long leads and simple bias circuits.
| Calibration Error @ 25 °C (AD590J/K) | +5.0 °C typical, +2.5 °C max |
|---|---|
| Calibration Error @ 25 °C (AD590L/M) | +1.0 °C typical, +0.5 °C max |
| Absolute Error (no external calibration) | +10 °C (typical) / +5.5 °C (max) |
| Nonlinearity (TO‑52 package) | +0.8 °C max |
| Repeatability | ±0.1 °C |
| Long‑Term Drift | ±0.1 °C |
| Current Noise | 40 pA/√Hz |
| Case Isolation to Either Lead | 10 MΩ |
| Effective Shunt Capacitance | 100 pF |
| Electrical Turn‑On Time | 20 µs |
| Reverse Bias Leakage Current (10 V) | 10 pA |
| Forward Voltage Rating | 44 V |
The AD590L has a typical calibration error of +1.0 °C and a maximum of +0.5 °C.
The AD590 can withstand a forward voltage of up to 44 V before damage may occur.