AD590MF/883B Board Mount Temperature Sensors Transducer IC
2-Terminal IC Temperature Transducer
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
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).
The AD590 should be used in any temperature-sensing application
below 150°C in which conventional electrical temperature sensors
are currently employed. The inherent low cost of a monolithic
integrated circuit combined with the elimination of support
circuitry makes the AD590 an attractive alternative for many
temperature measurement situations. Linearization circuitry,
precision voltage amplifiers, resistance measuring circuitry, and
cold junction compensation are not needed in applying the AD590.
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