Introduction

TP-AD592 is a two terminal temperature probe based on the AD592 monolithic integrated circuit transducer (Analog Devices). It provides an output current proportional to absolute temperature. For a wide range of supply voltages the transducer acts as a high impedance temperature dependent current source of 1 µA/K. TP-AD592 can be employed in applications between -25°C and +105°C where conventional temperature sensors (i.e., thermistor, RTD, thermocouple, diode) are currently being used. Because AD592 is a temperature dependent current source, it is immune to voltage noise pickup and IR drops in long cables when used remotely.

Features

  • Highly linear output.
  • Wide temperature range: -25°C to +105°C.
  • High noise immunity.
  • Cable can be extended to several hundred meters.
  • Waterproof version available.

Ordering Codes

Code Description
TP-AD592-MTP Temperature probe, metal tube
TP-AD592-SSC Temperature probe, waterproof

Specifications

Power supply
Supply voltage 7..30 VDC (Forward voltage)
Reverse voltage 20 V max
Accuracy
Calibration error 1.5° @ 25°C typ
Nonlinearity 0.15° typ
Output characteristics
Nominal output current 298 μΑ @ 25°C
Temperature coefficient 1 μA/°C
Other
Cable length 1.2 m
Document File
AD592, Current type temperature sensor AD592.pdf