- THERMOCOUPLE ELECTROMOTIVE FORCE VOLTAGE TO TEMPERATURE CONVERTER WITH INTEGRATED COLD-JUNCTION COMPENSATION AND LINEARIZATION

摘要

Mixed-signal integrated circuit 1) analog for converting the analog front and, 2) the voltage value of the thermocouples having a differential input stage employed to directly connect to at least one of the thermocouple into a digital representation value-to-digital converter (ADC) and, 3) NIST (National Institute of Standards and Technology) by the use of specific factors for the thermocouple of each type from the coefficient table based on, a run of multiple order polynomial with the thermocouple mechanism voltages (the digital representation value) linear and with the linearization logic for conversion into temperature measurement, 4) integrated temperature to measure the cold junction temperature sensor, 5) optionally, the input for selecting the each of the plurality of thermocouples to measure the temperature of a plurality of thermocouples a register for storing the multiplexer and, 6) optionally, measuring temperature values, the high and low set point, the warning limit values, etc. , And 7) comprises a communication interface for setting the parameters and receives the temperature information.