GENERAL DESCRIPTION

The AD590 is a 2-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature. For supply voltages between 4 V and 30 V, the device acts as a high impedance, constant current regulator passing 1 μA/K. Laser trimming of the chip’s thin-film resistors is used to calibrate the device to 298.2 μA output at 298.2 K (25°C).

FEATURES

Linear current output: 1 μA/K

Wide temperature range: −55°C to +150°C

Probe-compatible ceramic sensor package

2-terminal device: voltage in/current out

Laser trimmed to ±0.5°C calibration accuracy (AD590M)

Excellent linearity: ±0.3°C over full range (AD590M)

Wide power supply range: 4 V to 30 V

Sensor isolation from case

Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52,

8-lead SOIC, and die form