The AD590 is an integrated-circuit temperature transducer that produces an output current proportional to absolute temperature. It features linear current output, a wide temperature range, a two-terminal device with voltage input and current output, a wide power supply range, sensor isolation from the case, and low cost.
The Intersil AD590 is an integrated-circuit temperature transducer that produces an output current proportional to absolute temperature. It acts as a high impedance constant current regulator, passing 1µA/oK for supply voltages between +4V and +30V. The device is calibrated to 298.2µA output at 298.2 oK (25°C) via laser trimming of the chip's thin film resistors.
| Nominal Output Current at 298.2oK | 298.2 µA |
|---|---|
| Nominal Temperature Coefficient | 1.0 µA/oK |
| Operating Temperature Range | -55 oC to 150 oC |
| Power Supply Range | +4 to +30 V |
| Maximum Junction Temperature | 175oC |
| Non-Linearity (AD590I) | ±3.0 Max oC |
| Non-Linearity (AD590J) | ±1.5 Max oC |
The device is calibrated to provide a 298.2µA output at 298.2 oK (25°C).
The device has a nominal temperature coefficient of 1.0 µA/oK.
The device operates in a temperature range of -55°C to 150°C.