Analog Devices Inc. AD590 2-Terminal IC Temperature Transducers

Analog Devices AD590 2-terminal IC Temperature Transducers produce an output current proportional to absolute temperature. The devices act as a high impedance (>10MΩ), constant current regulator passing 1μA/K, specifically for supply voltages between 4V and 30V. The cost of a monolithic integrated circuit combined with the elimination of support circuitry makes AD590 ideal alternatives for many temperature measurement situations. AD590 can be used in any temperature-sensing application below 150°C in which conventional electrical temperature sensors are employed. AD590 are available in die form, making them suitable for hybrid circuits and fast temperature measurements in protected environments.


  • 1μA/K linear current output
  • −55°C to +150°C wide temperature range
  • Probe-compatible ceramic sensor package
  • 2-terminal device: voltage in/current out
  • Laser trimmed to ±0.5°C calibration accuracy (AD590M)
  • ±0.3°C over full range (AD590M) excellent linearity
  • 4V to 30V wide power supply range
  • Sensor isolation from case
  • Surface Mount Technology (SMT), Surface Mount Devices (SMD) and through hole mounting style
  • Package/case available in:
    • 2-lead FLATPACK
    • 4-lead LFCSP
    • 3-pin TO-52
    • 8-lead SOIC
    • Die form


  • Temperature measurement
  • Temperature compensation or correction of discrete components
  • Biasing proportional to absolute temperature
  • Flow rate measurement, level detection of fluids and anemometry

Metallization Diagram

Block Diagram - Analog Devices Inc. AD590 2-Terminal IC Temperature Transducers

Schematic Diagram

Schematic - Analog Devices Inc. AD590 2-Terminal IC Temperature Transducers
Publicado: 2019-02-22 | Actualizado: 2023-08-07