Method and apparatus for correcting thermal errors in the acquisition of electrical parameters

摘要

The process according to the invention comprises a preliminary phase of determining a model of a thermal variation of the main electrical quantities characterizing the digital circuit (cn1, cn2), this phase comprising the execution of a plurality of cycles of calibration corresponding to different values of temperature, an initialization phase is carried out at each of the use of the acquisition circuit, this phase makes it possible to measure the actual characteristic parameters of the digital circuit, and to readjust the various models of heat, and an operational phase comprising the application of the electrical quantities to be obtained at the input of the acquisition circuit, the digitization of said quantities and the correction of the digital value is obtained by virtue of the models of thermal variation previously determined.