Title :
An Integrated Two-Wire Transmitter with Intrinsic Temperature Sensing Capability
Author :
Filho, C.A. Dos Reis
Author_Institution :
Delft University of Technology, Dept. of Electrical Engineering, P.O. Box 5031, 2600 GA DELFT, The Netherlands
Abstract :
A new integrated two-wire transmitter (TWT) is presented which converts signals from temperature sensors, RTD´s and thermocouples into a industrial standard 4mA to 20mA output. This TWT is unique in that it is a silicon temperature sensor with a standard output which also allows compensation for the cold junction of thermocouples. Although a full-custom design, it is shown that its architecture is also suitable for semi-custom implementation. As a signal conditioner, measured samples of the TWT has shown an accuracy of 0.1% (FS) and nonlinearity of ±0.02%.
Keywords :
Calibration; Costs; Process control; Sensor phenomena and characterization; Silicon; Temperature sensors; Thermal sensors; Thermistors; Transmitters; Voltage;
Conference_Titel :
Solid-state Circuits Conference, 1987. ESSCIRC '87. 13th European
